Eva Kopecka, Simeon Reich,
"A mean ergodic theorem for nonlinear semigroups on the Hilbert ball"
, in Journal of Nonlinear and Convex Analysis, Vol. 11, Nummer 2, 2010, ISSN: 1345-4773
Original Titel:
A mean ergodic theorem for nonlinear semigroups on the Hilbert ball