%0 Journal Article %A E. Straus %A A. Cayford %T Singularities of analytic functions in a differential ring %J Acta Arithmetica %D 1988 %P 147-154 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-50-2-147-154/ %R 10.4064/aa-50-2-147-154 %G en %F 10_4064_aa_50_2_147_154