@article{GDZPPN002385104, title = {Implicit functions and solutions of equations in groups.}, journal = {Mathematische Zeitschrift}, volume = {62}, year = {1955}, pages = {335-346}, zbl = {0064.26001}, url = {http://dml.mathdoc.fr/item/GDZPPN002385104} }
Bartle, Robert G. Implicit functions and solutions of equations in groups.. Mathematische Zeitschrift, Tome 62 (1955) pp. 335-346. http://gdmltest.u-ga.fr/item/GDZPPN002385104/