@article{1103858778, author = {Woronowicz, S. L.}, title = {On the purification map}, journal = {Comm. Math. Phys.}, volume = {29}, number = {1}, year = {1973}, pages = { 55-67}, language = {en}, url = {http://dml.mathdoc.fr/item/1103858778} }
Woronowicz, S. L. On the purification map. Comm. Math. Phys., Tome 29 (1973) no. 1, pp. 55-67. http://gdmltest.u-ga.fr/item/1103858778/