Åhag, Per, Rafał Czyż, and Lisa Hed. “The Dirichlet Problem for $m$-Subharmonic Functions on Compact Sets”. MATHEMATICA SCANDINAVICA 126, no. 3 (September 3, 2020): 497-512. Accessed December 5, 2020. https://www.mscand.dk/article/view/119708.