00630naa#a2200169#i#450# EN\\bibl\20119 20260628162248.7 20260625b2026####ek#y0engy0150####ca RU Theoretical Approaches to the Study of the Self-Attitude of University Students Conference article/thesis Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2026 4 с. Conference article/thesis local Психология. 159.9 Kaznacheeva Natal'ya Borisovna Denisova Anastasiya Vital'evna itt-pgups.ru