@article{01894839, title = {Isothermic surfaces and Hopf cylinders.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {44}, year = {2003}, pages = {1-8}, zbl = {1035.53011}, language = {en}, url = {http://dml.mathdoc.fr/item/01894839} }
Preissler, Gabi. Isothermic surfaces and Hopf cylinders.. Beiträge zur Algebra und Geometrie, Tome 44 (2003) pp. 1-8. http://gdmltest.u-ga.fr/item/01894839/