00548naa#a2200169#i#450# EN\\bibl\70072 /en/manage/index 20250901045433.1 1999-9917 20230912b2023####ek#y0engy0150####ca RU TO THE ANNIVERSARY OF VLADIMIR MIKHAILOVICH LITVISHKOV – A MAN, A TEACHER, A SCIENTIST Journal article Ryazan Academy of the FPS of Russia 2023 2 с. Journal article local Luzgin Sergey Aleksandrovich fht.editorum.ru /en/manage/index