Netuka, Ivan: Extensions of operators and the Dirichlet problem in potential theory.
(English).
In:
Frolík, Z., Souček, V.
and Vinárek, J. (eds.): Proceedings of the 13th Winter School on Abstract Analysis.
Section of Analysis.
Circolo Matematico di Palermo, Palermo, 1985.
pp. [143]-163