%0 Journal Article %A Francisco Javier González--Acuña Universidad Nacional Autónoma de Mexico %A México ficomx@yahoo.com. %T On the homeotopy group of the non orientable surface of genus three %J Revista colombiana de matematicas %D 2006 %P 75-79 %V 40 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RCM_2006_40_2_a0/ %F RCM_2006_40_2_a0