@article{01751284, title = {Some conditions on Douglas algebras that imply the invariance of the minimal envelope map.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {25}, year = {2001}, pages = {615-624}, doi = {10.1155/S0161171201004148}, zbl = {1029.46075}, language = {en}, url = {http://dml.mathdoc.fr/item/01751284} }
Guillory, Carroll. Some conditions on Douglas algebras that imply the invariance of the minimal envelope map.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 615-624. doi : 10.1155/S0161171201004148. http://gdmltest.u-ga.fr/item/01751284/