@article{GDZPPN002398664, title = {A Not on Exit Time under Transformations.}, journal = {Mathematische Zeitschrift}, volume = {99}, year = {1967}, pages = {324-330}, zbl = {0152.24401}, url = {http://dml.mathdoc.fr/item/GDZPPN002398664} }
Simons, F.H. A Not on Exit Time under Transformations.. Mathematische Zeitschrift, Tome 99 (1967) pp. 324-330. http://gdmltest.u-ga.fr/item/GDZPPN002398664/