Hadryjańska, B. (2006) “Economic and Ecological Aspects of Utilization of Conventional and Renewable Energy Sources in Economic Processes”, Journal of Agribusiness and Rural Development, 5(377), pp. 142-160. Available at: http://www1.up.poznan.pl/jard/index.php/jard/article/view/983 (Accessed: 29March2024).