Apopheosis of Scientific and Pedagogical Creative Work of Petro Mykhailovych Bilonizhka: Five Personal Monographic Editions (to the 85th Anniversary of His Birth) - O. I. Matkovskyi; I. M. Naumko; M. M. Pavlun; V. I. Pavlyshyn; L. Z. Skakun (Mineralogical journal, 2020)