%0 Journal Article
%A S. Basarab
%A V. Nica
%T Approximation Properties and Existential Completeness  for Ring Morphisms.
%J Manuscripta mathematica
%D 1980
%P 227-282
%V 33
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1980__33_154749/
%F MM2_1980__33_154749