%0 Journal Article %A Ruben Schramm %T Quasilineary Properties of Differentiable Functions in a Field with a Non-Archimedean Valuation. %J Mathematische Zeitschrift %D 1974 %P 265-272 %V 138 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1974__138_172101/ %F MZ_1974__138_172101