Oliveira Regilene; Schlomiuk Dana; Travaglini Ana Maria: Geometry and integrability of quadratic systems with invariant hyperbolas. (2021)
Oliveira Regilene; Schlomiuk Dana; Travaglini Ana Maria; Valls Claudia: Geometry, integrability and bifurcation diagrams of a family of quadratic differential systems as application of the Darboux theory of integrability. (2021)