BakhtinA. K. “On the <em class="a-Plus-plus">N</em&gt;Th Diameters of Continua”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 46, no. 11, Nov. 1994, pp. 1561–1563, https://umj.imath.kiev.ua/index.php/umj/article/view/5595.