@article{GDZPPN002057328, title = {A New Method in Fixed Point Theory.}, journal = {Commentarii mathematici Helvetici}, volume = {34}, year = {1960}, pages = {1-16}, zbl = {0144.22602}, url = {http://dml.mathdoc.fr/item/GDZPPN002057328} }
Swan, Richard G. A New Method in Fixed Point Theory.. Commentarii mathematici Helvetici, Tome 34 (1960) pp. 1-16. http://gdmltest.u-ga.fr/item/GDZPPN002057328/