@article{GDZPPN00233626X, title = {Surfaces whose canonical maps are of odd degrees.}, journal = {Mathematische Annalen}, volume = {293}, year = {1992}, pages = {13-30}, zbl = {0724.14026}, url = {http://dml.mathdoc.fr/item/GDZPPN00233626X} }
Tan, Sheng-Li. Surfaces whose canonical maps are of odd degrees.. Mathematische Annalen, Tome 293 (1992) pp. 13-30. http://gdmltest.u-ga.fr/item/GDZPPN00233626X/