Biruk, Sławomir, and Piotr Jaśkowski. “Selection of Subcontractors Using Ordinal Ranking Methods Based on Condorcet Approach”. Budownictwo i Architektura 15, no. 4 (December 1, 2016): 033–040. Accessed May 4, 2024. https://ph.pollub.pl/index.php/bia/article/view/482.