Achkan Vitaliy Valentinovich. Forming of mathematical competences during the process of studying equations and inequalities : к.пед.н. : spec.. 13.00.02 - Теорія і методика навчання (з галузей знань) : presented. 2009-11-24; popup.evolution: .; National pedagogikal university named by M.P.Dragomanov. – , 0409U005213.

Updated: 2026-10-23