[1] Z. Vostrý:
Congruence of Analytic Functions Modulo a Polynomial. Kybernetika 13 (1977), 2, 116-137.
MR 0451643
[2] Z. Vostrý:
New Algorithm for Polynomial Spectral Factorization with Quadratic Convergence I. Kybernetika 11, (1975), 6, 415-422.
MR 0400658
[3] Z. Vostrý:
New Algorithm for Polynomial Spectral Factorization with Quadratic Convergence II. Kybernetika 12 (1976), 4, 248-259.
MR 0423782