Ашкинузе, В. Г. “Теорема о расщепляемости $J$-алгебр”. Ukrains’kyi Matematychnyi Zhurnal 3, no. 4 (October 15, 1951): 381–398. Accessed February 17, 2026. https://umj.imath.kiev.ua/index.php/umj/article/view/6497.