Problèmes de modules pour des équations différentielles non linéaires du premier ordre Jean Martinet, Jean-Pierre Ramis (1982) Publications Mathématiques de l'IHÉS
Proper intersection multiplicity and regular separation of analytic sets Ewa Cygan, Piotr Tworzewski (1994) Annales Polonici Mathematici We consider complex analytic sets with proper intersection. We find their regular separation exponent using basic notions of intersection multiplicity theory.