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@article{PORMA_1991__48_1_115737, author = {Castillo, Jes\'us M.F.}, title = {Factorization of entropy ideals: proportional case}, journal = {Portugaliae mathematica}, pages = {11--23}, publisher = {mathdoc}, volume = {48}, number = {1}, year = {1991}, mrnumber = {1107255}, zbl = {0736.47020}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1991__48_1_115737/} }
Castillo, Jesús M.F. Factorization of entropy ideals: proportional case. Portugaliae mathematica, Tome 48 (1991) no. 1, pp. 11-23. http://geodesic.mathdoc.fr/item/PORMA_1991__48_1_115737/