@article{1195518111, author = {Horikawa, Eiji}, title = {On the periods of enriques surfaces, II}, journal = {Proc. Japan Acad. Ser. A Math. Sci.}, volume = {53}, number = {7}, year = {1977}, pages = { 53-55}, language = {en}, url = {http://dml.mathdoc.fr/item/1195518111} }
Horikawa, Eiji. On the periods of enriques surfaces, II. Proc. Japan Acad. Ser. A Math. Sci., Tome 53 (1977) no. 7, pp. 53-55. http://gdmltest.u-ga.fr/item/1195518111/