1. Singularities of holomorphic foliations;BAUM P;J Differential Geometry,1972
2. Sur les feullietages de l’espace projectif ayant une composante de kupka;BRUNELLA M;Enseig Math (2),2009
3. Exceptional singularities of codimension one holomorphic foliations;BRUNELLA M;Publ Mathemàtique,2011
4. Foliations with a kupka component on algebraic manifolds;CALVO-ANDRADE O;Bull of the Brazilian Math Soc,1999
5. Foliations with a radial kupka set on projective spaces;CALVO-ANDRADE O;Bull of the Brazilian Math Soc,2016