Luque López, Antonio; Mellor Null, Alexander Virgil; Antolín Fernández, Elisa; García-Linares Fontes, Pablo; Ramiro Gonzalez, Iñigo; Tobías Galicia, Ignacio y Martí Vega, Antonio (2012). Symmetry considerations in the empirical k.p Hamiltonian for the study of intermediate band solar cells. "Solar Energy Materials and Solar Cells", v. 103 ; pp. 171-183. ISSN 0927-0248. https://doi.org/10.1016/j.solmat.2012.04.015.