FRYCA-KNOP, Joanna; MIƁOSZ, Agnieszka. SOCIAL CONDITIONS OF FUNCTIONAL EFFICIENCY AND DURABILITY OF ROAD TRANSPORT ENTERPRISES. Transport Economics and Logistics, [S.l.], v. 73, p. 47-57, feb. 2018. ISSN 2657-6104. Available at: <http://www.znetil.ug.edu.pl/index.php/etil/article/view/151>. Date accessed: 31 oct. 2020. doi: http://dx.doi.org/10.5604/01.3001.0010.8301.