We give an elementary proof of a theorem of Andreian Cazacu on the behavior of morphisms of Klein surfaces under composition.
@article{urn:eudml:doc:44251, title = {Morphisms of Klein surfaces.}, journal = {Revista Matem\'atica de la Universidad Complutense de Madrid}, volume = {10}, year = {1997}, pages = {79-91}, zbl = {0883.30036}, mrnumber = {MR1485292}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:44251} }
Cirre, F. J. Morphisms of Klein surfaces.. Revista Matemática de la Universidad Complutense de Madrid, Tome 10 (1997) pp. 79-91. http://gdmltest.u-ga.fr/item/urn:eudml:doc:44251/