TY - JOUR AU - Rovira-Florián, José-Luis AU - Marin-Ramirez, Ana-Magnolia AU - Ortiz-Ortiz, Ruben-Dario PY - 2016 TI - A Generalization of the Modified Liouville Equation JF - American Journal of Applied Sciences VL - 13 IS - 11 DO - 10.3844/ajassp.2016.1326.1329 UR - https://thescipub.com/abstract/ajassp.2016.1326.1329 AB - We study the modified Liouville equation using various transformations to build dynamical systems and we use Dulac's criterion for give sufficient conditions of the non-existence of periodic orbits in the dynamical systems generated of the modified Liouville equation.