V. Kostytsky, Mychailo, Nataliia V. Kushakova-Kostytska, Vitalii M. Kravets, Oleg V. Pavlyshyn, and Olena Y. Kovtun. 2020. “Parliamentary-Presidential or Presidential-Parliamentary Republic As Modes of One Political Model or Different Concepts of Government”. Revista San Gregorio 1 (42). https://doi.org/10.36097/rsan.v1i42.1551.