00683naa#a2200217#i#450# EN\\bibl\112294 20260119162450.1 2311-1402 20220325b2022####ek#y0engy0150####ca ENG RU Photoperiodic chronotype stability in students of Khanty-Mansi Autonomous Area – Yugra and Vladikavkaz Journal article Nizhnevartovsk Nizhnevartovsk State University 2022 7 с. Journal article local . 612.82:57.034 ENG Ragozin Oleg N Schalamova Elena Yu Datieva Fatima S Pogonysheva Irina A vestnik.nvsu.ru