GENERAL PROPERTIES OF GRAVITATIONALLY BOUND SYSTEMS AT DIFFERENT LEVELS OF QUANTIZATION Статья Fil’chenkov M. Proceedings of the 17th Lomonosov Conference on Elementary Particle Physics - Particle Physics at the Year of Light, 2015. World Scientific Publishing Co. Pte. Ltd.. 2017. С. 503-505
ANALELE UNIVERSITATII DIN CRAIOVA - SERIA STIINTE FILOLOGICE, LINGVISTICA Журнал Editura Universitaria Craiova.