@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/