Implementation of atomic basis set composed of 1s Gaussian and 1s Slater-type orbitals to carry out quantum mechanics molecular calculations. - Juan C. Cesco; Claudia C. Denner; Graciela O. Giubergia; Ana E. Rosso; Jorge E. Pérez 002; F. S. Ortiz; Oscar E. Taurian; Rubén H. Contreras (J. Comput. Chem., 1999)