@article{1138844786, author = {Umegaki, Hisaharu}, title = {A functional method on amount of entropy}, journal = {Kodai Math. Sem. Rep.}, volume = {15}, number = {1}, year = {1963}, pages = { 162-175}, language = {en}, url = {http://dml.mathdoc.fr/item/1138844786} }
Umegaki, Hisaharu. A functional method on amount of entropy. Kodai Math. Sem. Rep., Tome 15 (1963) no. 1, pp. 162-175. http://gdmltest.u-ga.fr/item/1138844786/