1. The Essentials of Padé Approximants;Baker,1975
2. Orthogonal Polynomials;Szegö,1959
3. Sur le Développement des Fonctions Elliptiques en Fractions Continues;Dumas;Thesis,1908
4. Über eine Eigenschaft der elliptischen Polynome;Achyeser;Comm. Soc. Math. Kharkof (Zapiski Inst. Mat. Mech.),1934
5. J. Nuttall, Orthogonal polynomials for complex weight functions and the convergence of related Padé approximants, unpublished.