%0 Journal Article %A David F. Findley %T Polyhomogeneous Maps and Best Local Approximations of Degree ... . %J Manuscripta mathematica %D 1975 %P 1-32 %V 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1975__15_154304/ %F MM2_1975__15_154304