GENERAL PROPERTIES OF GRAVITATIONALLY BOUND SYSTEMS AT DIFFERENT LEVELS OF QUANTIZATION СтатьяFil’Chenkov M.Proceedings of the 17th Lomonosov Conference on Elementary Particle Physics - Particle Physics at the Year of Light, 2015. 2017. С. 503-505
ANALELE UNIVERSITATII DIN CRAIOVA - SERIA STIINTE FILOLOGICE, LINGVISTICA ЖурналEditura Universitaria Craiova.