Borsuk, M. (2008) “The transmission problem for elliptic second order equations in a conical domain”, Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, 7, pp. 61–89. Available at: https://studmath.uken.krakow.pl/article/view/13270 (Accessed: 31 October 2026).