@article{01780418, title = {<title-group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><article-title xml:lang="en"><math><mi>q</mi></math>-hyperelliptic compact nonorientable Klein surfaces without boundary.</article-title></title-group>}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {215-227}, doi = {10.1155/S0161171202109173}, zbl = {1010.30028}, language = {en}, url = {http://dml.mathdoc.fr/item/01780418} }
Bujalance, J.A.; Estrada, B.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 215-227. doi : 10.1155/S0161171202109173. http://gdmltest.u-ga.fr/item/01780418/ -hyperelliptic compact nonorientable Klein surfaces without boundary.