Universidad Nacional de Colombia
        
    
    Author in the following contributions
- Study of Higgs potential in an abelian extension of the Standard Model
 - Fermion mass hierarchy from nonuniversal abelian extensions of the Standard Model
 - Fases y Ángulos de Mezcla en Matrices Unitarias
 - Dark Matter in a Standard Model extension with additional $U(1)$ symmetry
 - Spontaneous Breaking of Supersymmetry in the Wess-Zumino Model