@article{GDZPPN002038285, title = {A generalization of Ostrowski's theorem on ultrametric inequalities.}, journal = {Aequationes mathematicae}, volume = {40}, year = {1990}, pages = {108-108}, url = {http://dml.mathdoc.fr/item/GDZPPN002038285} }
Garcia-Roig, J.L. A generalization of Ostrowski's theorem on ultrametric inequalities.. Aequationes mathematicae, Tome 40 (1990) p. 108. http://gdmltest.u-ga.fr/item/GDZPPN002038285/