[
Antonakis, J., Avolio, B.J., Sivasubramaniam, N. (2003). Context and leadership: an examination of the nine-factor full-range leadership theory using the Multifactor Leadership Questionnaire, The Leadership Quarterly, 14, 261-295, Pergamon.10.1016/S1048-9843(03)00030-4
]Search in Google Scholar
[
Ashforth, B.E., Humphrey, R.H. (1995). Emotions in the workplace: a reappraisal, Human Relations, 48(2), Sage Social Science Collection.10.1177/001872679504800201
]Search in Google Scholar
[
Avolio, B., Bass, B.M., & Jung, D.I. (1999). Re-ezamining the componends of transformational and transactional leadership using the multifactor leadership questionnaire, Journal of Occupational and Organizational Psychology, 72, 441-462.10.1348/096317999166789
]Search in Google Scholar
[
Avolio, B.J., Gardner, W.L. (2005). Authentic leadership development: getting to the root of positive forms of leadership, The Leadership Quarterly, 16, 315-338, Elsevier.10.1016/j.leaqua.2005.03.001
]Search in Google Scholar
[
Avolio, B, Walumbwa, F., Weber, T.J. (2009). Leadership: current theories, research, and future directions, Annual Review of Psychology, 60, 421-449.10.1146/annurev.psych.60.110707.163621
]Search in Google Scholar
[
Bass B.M. (1990). Bass & Stogdill’s handbook of leadership: theory, research, and managerial applications (3rd.ed.), New York, Free Press.
]Search in Google Scholar
[
Bass, B.M. (1997). Does the transactional-transformational leadership paradigm transcend organisational and national boundaries?, American Psychologist, 52(2), 130-139, American Psychological Association.10.1037/0003-066X.52.2.130
]Search in Google Scholar
[
Bass, B.M. (1999). Two decades of research and development in transformational leadership, European Journal of Work and Organisational Psychology, 8(1), 9-32.10.1080/135943299398410
]Search in Google Scholar
[
Bass, B.M. (2000). The future of leadership in Learning Organizations, The Journal of Leadership Studies, 7(3), Sage Publications, Midwest Academy of Management.10.1177/107179190000700302
]Search in Google Scholar
[
Bass, B.M., Avolio, B.J. (1990). Developing transformational leadership: 1992 and beyond, Journal of European Industrial Training, 14, 21-27.10.1108/03090599010135122
]Search in Google Scholar
[
Bass, B.M., & Riggio, R.E. (2006). Transformational Leadership (2nd Edition), New York, Taylor & Francis Group, LLC.10.4324/9781410617095
]Search in Google Scholar
[
Bass, B.M., Steidlmeier, P. (1999). Ethics, character, and authentic transformational leadership behaviour, Leadership Quarterly, 10, 181-217.10.1016/S1048-9843(99)00016-8
]Search in Google Scholar
[
Bass, B.M., Avolio, B.J., Jung, D.I., Berson, Y. (2003). Predicting unit performance by assessing transformational and transactional leadership, Journal of Applied Psychology, 88(2), 207-218, American Psychological Association.10.1037/0021-9010.88.2.20712731705
]Search in Google Scholar
[
Bass, B.M., Bass, R. (2008). The Bass Handbook of leadership. Theory, research & managerial applications, Free Press (a division of Simon & Schuster, Inc.), New York.
]Search in Google Scholar
[
Bolden, R. (2007). Trends and Perspectives in Management and Leadership Development, Business Leadership Review, IV:II, Association of MBAs.
]Search in Google Scholar
[
Bono, J.E., Judge, T.A. (2004). Personality and transformational leadership: a meta-analysis, Journal of Applied Psychology, 89(5), 901-910, American Psychological Association10.1037/0021-9010.89.5.90115506869
]Search in Google Scholar
[
Burges, T.P. (2016). Transformational leadership: A great place to begin, Cornwall, NY, Cornwall Leadership Institute disposable at https://cornwallleadershipinstitute.files.wordpress.com/2016/10/burgess-tp-2016-transformational-leadership-a-great-place-to-begin1.pdf.
]Search in Google Scholar
[
Burgoyne, J., Hirsh, W., Williams, S. (2004). The Development of Management and Leadership Capability and its Contribution to Performance: The evidence, the prospects and the research need, Research Report no. 560, Lancaster University.
]Search in Google Scholar
[
Denis, D.J., Legerski, J. (2006). Causal Modeling and the Origins of Path Analysis, Theory & Science, ISSN 1527-5558 disposable at http://theoryandscience.icaap.org/content/vol7.1/denis.html.
]Search in Google Scholar
[
Forrester, J.W. (1999b). Urban Dynamics, Pegasus Communications, Inc. Waltham.
]Search in Google Scholar
[
Fredrickson, B.L. (2001). The role of positive emotions in positive psychology, The Broaden-and-Build theory of positive emotions, American Psychologist, 56(3), 218-226.10.1037/0003-066X.56.3.218
]Search in Google Scholar
[
Gardner, L., Stough, C. (2002). Examining the relationship between leadership and emotional intelligence in senior level managers, Leadership & Organizational Development Journal, 23/2, 68-78, Emerald.10.1108/01437730210419198
]Search in Google Scholar
[
Ghinea, V., Mihailova, L., Papazov, E. (2015). Organizational Culture Dynamics. Complex Systems Dynamics.// Quality – access to success, 16(147), 99-105.
]Search in Google Scholar
[
GLOBE Research Program (1999). Culture specific and cross-culturally generalizable implicit leadership theories: are attributes of charismatic/transformational leadership universally endorsed?, Leadership Quarterly, 10(2), 219-256, Elsevier Science Inc.
]Search in Google Scholar
[
House, R., Podsakoff, P. (1994). “Leadership effectiveness: Past perspectives and future directions for research” in Greenberg, J. (Eds.), Organizational Behavior: The State of the Science. NJ: Hillsdale, 45-82.
]Search in Google Scholar
[
Johnson, J.A., Breckon, D.J. (2007). Managing health education and promotion programs, Leadership skills for the 21st century, Jones and Bartlett Publishers, Inc.
]Search in Google Scholar
[
Kim, D.H. (1993). A framework and methodology for linking individual and organizational learning: applications in TQM and product development, PhD thesis submitted in 1986 to the Sloan School of Management, Massachusetts Institute of Technology.
]Search in Google Scholar
[
Lievens, F., Van Geit, P., Coetsier, P. (1997). Identification of transformational leadership qualitie: an examination of potential biases, European Journal of Work and Organizational Psychology, 6(4), 415-430, Psychology Press Ltd.10.1080/135943297399015
]Search in Google Scholar
[
Luthans, F. (2002). The need for and meaning of positive organizational behavior, Journal of Organizational Behavior, 23, 695-706, Wiley InterScience, DOI: 10.1002/job.165.10.1002/job.165
]Search in Google Scholar
[
McGarvey, B., Hannon, B. (2004). Dynamic Modeling for Business Management. An introduction, Springer-Verlag, New-York, Inc.10.1007/b97269
]Search in Google Scholar
[
Moxnes, E. (2000). Not only the tragedy of the commons: misperceptions of feedback and policies for sustainable development, System Dynamics Review, 16(4), 325-348, John Wiley&Sons, Ltd.10.1002/sdr.201
]Search in Google Scholar
[
Pallant, J. (2005). SPSS Surviving Manual (2nd edn.), Allen & Unwin. Australia.
]Search in Google Scholar
[
Petkova-Gurbalova, I. (2019). Leadership. Contemporary Development Trends: Bulgarian Case, Sofia.
]Search in Google Scholar
[
Pencheva, М. (2016). Leadership and knowledge transfer practices in public administration, Journal of Leadership and Organizational Development, Sofia University St Kliment Ohridski, 358-365.
]Search in Google Scholar
[
Pencheva, M. (2018). Leadership Style - Evidence from Manufacturing Industry in Northeastern Bulgaria, Journal of Emerging Trends in Marketing and Management, Bucharest University of Economic Studies, I(1), 192-201, November.
]Search in Google Scholar
[
Popper, M., Mayseless, O. (2007). The building blocks of leader development: a psychological conceptual framework, University of Haifa, Department of Psychology.10.1108/01437730710823905
]Search in Google Scholar
[
Senge, P.M. (1999). The fifth discipline. The art and practice of the learning organisation, Random House Business Books, London, Great Britain.
]Search in Google Scholar
[
Smith, H.L., Krueger, L.M. (1933). A Brief Summary of Literature on Leadership, Bloomington: Indiana University, School of Education Bulletin.
]Search in Google Scholar
[
Sterman, J.D. (1989). Misperceptions of feedback in dynamic decision making, Organizational Behavior and Human Decision Processes, 43.10.1016/0749-5978(89)90041-1
]Search in Google Scholar
[
Tejeda, M.J., Scandura, T.A., Pillai, R. (2001). The MLQ revisited. Psychometric properties and recommendations, The Leadership Quarterly, 12, 31-52, Elsevier.
]Search in Google Scholar
[
Turner, G. (2008). A comparison of the Limits to Growth with Thirty Years of Reality, CSIRO working paper series, ISSN 1834-5638.
]Search in Google Scholar
