Causil, D., 		Urango-Baquero, M., AND 		Portacio, A..
"Second-Harmonic and Third-Harmonic Generation in Nanostructures with Asymmetric Confinement Potential: The Role of Two-level Atom Approximation" <em>Revista Cubana de Física</em> [Online], Volume 35 Number 2 (15 December 2018)