On the structure of non-excellent curve singularities in characteristic p Bruce Bennett (1973) Publications Mathématiques de l'IHÉS
On two-dimensional regular local rings and a lifting problem Paolo Valabrega (1973) Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Openly embedding local noetherian domains. Seth Warner (1972) Journal für die reine und angewandte Mathematik