1.
Oláh J, Popp J, Máté D, Ardhi Hidayat Y. Market structure and concentration ratio: evidence of IT companies in Hungary. fso [Internet]. 2019 Sep. 30 [cited 2023 Mar. 21];7(3):7-18. Available from: https://ojs.wsb.edu.pl/index.php/fso/article/view/53