2012, Victor Hugo Jorge Pérez, Marcelo José Saia, João Nivaldo Tomazella, João Nivaldo Tomazella, Roberto Callejas Bedregal , Lê constant families of singular hypersurfaces, ISSN: 07176279
2012, Roberto Callejas Bedregal, Michelle Ferreira Zanchetta Morgado, José Antonio Seade Kuri , Lê Cycles and Milnor Classes of Compact Hypersurfaces, ISSN: 07061994