Zorii, N.V. (2001) “Extremal Problems in the Theory of Capacities of Condensers in Locally Compact Spaces. II”,
Ukrains’kyi Matematychnyi Zhurnal, 53(4), pp. 466–488. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/4269 (Accessed: 14 April 2025).