Kosiada-Sylburska M. Analysis of the mechanisms for entrusting Services of General Economic Interest (SGEI) from the agency theory perspective. SPE [Internet]. 2020 Jun. 1 [cited 2024 May 2];114:235–247. Available from: https://czasopisma.ltn.lodz.pl/Studia-Prawno-Ekonomiczne/article/view/822