@article{GDZPPN00221797X, title = {Stability of Critical Values and Isolated Critical Continua.}, journal = {Manuscripta mathematica}, volume = {12}, year = {1974}, pages = {163-194}, zbl = {0284.58007}, url = {http://dml.mathdoc.fr/item/GDZPPN00221797X} }
Reeken, Michael. Stability of Critical Values and Isolated Critical Continua.. Manuscripta mathematica, Tome 12 (1974) pp. 163-194. http://gdmltest.u-ga.fr/item/GDZPPN00221797X/