@article{1029003825, author = {Lambert, Alan}, title = {Normal extensions of subnormal composition operators.}, journal = {Michigan Math. J.}, volume = {35}, number = {1}, year = {1988}, pages = { 443-450}, language = {en}, url = {http://dml.mathdoc.fr/item/1029003825} }
Lambert, Alan. Normal extensions of subnormal composition operators.. Michigan Math. J., Tome 35 (1988) no. 1, pp. 443-450. http://gdmltest.u-ga.fr/item/1029003825/