@article{GDZPPN001265148, title = {Extremal properties of contraction semigroups on c0 .}, journal = {Semigroup forum}, volume = {53}, year = {1996}, pages = {208-211}, zbl = {0858.47026}, url = {http://dml.mathdoc.fr/item/GDZPPN001265148} }
Lin, P.K. Extremal properties of contraction semigroups on c0 .. Semigroup forum, Tome 53 (1996) pp. 208-211. http://gdmltest.u-ga.fr/item/GDZPPN001265148/