Botyuk, A. O., G. P. Khoma, and L. G. Khoma. “Existence of the Vejvoda-Shtedry Spaces”. Ukrains’kyi Matematychnyi Zhurnal 49, no. 2 (February 25, 1997): 302–308. Accessed January 11, 2026. https://umj.imath.kiev.ua/index.php/umj/article/view/5007.