[1. Pană, L., Social and technological prognosis, (Bucharest: Politehnica Press Publishing House, 2005), 77.]Search in Google Scholar
[2. http://www.edumark.ase.ro/RePEc/rmko/44/3.pdf]Search in Google Scholar
[3. Petrescu, D., “Military scenario, fundamental conceptual framework for the exercises conducted at the tactical-operational joint level”, Bulletin of „Carol I” National Defence University, vol. 2, 1st no./March, Bucharest, (2015): 215-219.]Search in Google Scholar
[4. http://www.geofabrik.de/data/download.html]Search in Google Scholar
[5. http://www.geo-spatial.org/download/romania-seturi-vectoriale]Search in Google Scholar
[6. QGIS Training Manual, Release 2.8, QGIS Project, available at https://docs.qgis.org/2.8/en/docs/training_manual/index.html 2015, access 14.11.2015]Search in Google Scholar
[7. Bucovețchi O., Simion C.P., Dragomir R. and Manolache C. “Considerations regarding the companies’ obligations towards the directive 2008/114/CE concerning critical infrastructures”, Annals of the Oradea University. Fascicle of Management and Technological Engineering, volume IX (XIX), ISSN 1583 - 0691 (2010):4.11-4.14 11]Search in Google Scholar