CASES IN RUSSIAN: EXPLANATION AND APPLICATION OF THE SIX CASES (NOMINATIVE, GENITIVE, DATIVE, ACCUSATIVE, INSTRUMENTAL, AND PREPOSITIONAL), THEIR ENDINGS, AND THEIR EFFECT ON SENTENCE STRUCTURE. Eur. sci. methodical j. 2024;2(11):16-19. Accessed September 11, 2025. https://europeanscience.org/index.php/3/article/view/994