[Buckley J.J. (1992). Solving fuzzy equations in economics and finance, Fuzzy Sets and Systems, 48, pp. 289–296.]Search in Google Scholar
[Chwastyk A., Kosiński W. (2013). Fuzzy calculus with applications, Mathematica Applicanda, 41(1), pp. 47–96.]Search in Google Scholar
[Goetschel R.J., Voxman W. (1986). Elementary fuzzy calculus. Fuzzy Sets and Systems, 18(1), pp. 31–43.10.1016/0165-0114(86)90026-6]Search in Google Scholar
[Jaruga A., Nowak W.A., Szychta A. (2001). Administrating Accounting (in Polish) (Rachunkowość Zarządcza: koncepcje i zastosowania). Gdańsk: Absolwent.]Search in Google Scholar
[Kaucher E. (1980). Interval analysis in the extended interval space IR. Fundamentals of Numerical Computation (Computer-Oriented Numerical Analysis) 2, pp. 33–49.10.1007/978-3-7091-8577-3_3]Search in Google Scholar
[Kosiński W., Prokopowicz P. Ślęzak D. (2002). Fuzzy numbers with algebraic operations: algorithmic approach. In Klopotek M., Wierzchoń S.T., Michalewicz M. (Eds.), Proc. IIS'2002, Sopot, June 3–6, Poland, Heidelberg: Physica Verlag, pp. 311–320.]Search in Google Scholar
[Kosiński W., Prokopowicz P., Ślęzak D. (2003). Ordered fuzzy numbers. Bulletin of the Polish Academy of Sciences, 51(3), pp. 327–338.]Search in Google Scholar
[Kosiński W. (2006). On fuzzy number calculus. Int. J. Appl. Math. Comput. Sci., 16(1), pp. 51–57.]Search in Google Scholar
[Kosiński W.K., Kosiński W., Kościeński K. (2013). Ordered Fuzzy Numbers approach to an investment project evaluation. Management and Production Engineering Review, 4(2), pp. 50–62.10.2478/mper-2013-0015]Search in Google Scholar
[Kuchta D. (2001). Miękka matematyka w zarządzaniu. Zastosowanie liczb przedziałowych i rozmytych w rachunkowości zarządczej. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej.]Search in Google Scholar
[Nguyen H.T. (1978). A note on the extension principle for fuzzy sets. J. Math. Anal. Appl. 64, 369–380.10.1016/0022-247X(78)90045-8]Search in Google Scholar
[Vujošević M., Petrović D., Petrović R. (1996). EOQ formula when inventory cost is fuzzy. Int. J. Production Economics, 45, pp. 499–504.10.1016/0925-5273(95)00149-2]Search in Google Scholar