Horáček, J.; Sasakawa, T. (1984). "Method of continued fractions with application to atomic physics. II". Physical Review A. 30 (5): 2274–2277. doi:10.1103/PhysRevA.30.2274. ISSN0556-2791.
Ribeiro, E.M.S.; Machado, L.E.; Lee, M.-T.; Brescansin, L.M. (2001). "Application of the method of continued fractions to electron scattering by polyatomic molecules". Computer Physics Communications. 136 (1–2): 117–125. doi:10.1016/S0010-4655(01)00151-5. ISSN0010-4655.
Horáček, J.; Sasakawa, T. (1984). "Method of continued fractions with application to atomic physics. II". Physical Review A. 30 (5): 2274–2277. doi:10.1103/PhysRevA.30.2274. ISSN0556-2791.
Ribeiro, E.M.S.; Machado, L.E.; Lee, M.-T.; Brescansin, L.M. (2001). "Application of the method of continued fractions to electron scattering by polyatomic molecules". Computer Physics Communications. 136 (1–2): 117–125. doi:10.1016/S0010-4655(01)00151-5. ISSN0010-4655.