Certain equivalences of Mrowka's separating condition enable us to characterize when parametric maps are open, closed or quotient.
@article{urn:eudml:doc:39792, title = {Sobre el teorema de inmersi\'on de Mr\'owka.}, journal = {Revista Matem\'atica Hispanoamericana}, volume = {41}, year = {1981}, pages = {80-88}, zbl = {0498.54008}, language = {es}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39792} }
López Pellicer, Manuel; Tarazona Ferrandis, Enrique. Sobre el teorema de inmersión de Mrówka.. Revista Matemática Hispanoamericana, Tome 41 (1981) pp. 80-88. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39792/