Isothermic surfaces as solutions of Calapso PDE. Calapso, Maria Teresa; Udrişte, Constantin — 2008 Balkan Journal of Geometry and its Applications (BJGA)
Contact transformation of a presymplectic form with quasi-Sasakian structure. Calapso, Maria Teresa; Defever, F.; Rosca, R. — 2004 Balkan Journal of Geometry and its Applications (BJGA)
Sulle eliche di seconda specie. Maria Teresa Calapso — 1960 Bollettino dell'Unione Matematica Italiana