- Zdenek Vostrý:
New algorithm for polynomial spectral factorization with quadratic convergence. I. Kybernetika 11(6): 415-422 (1975) - Ten years of the journal Kybernetika. Kybernetika 11(1): 1-2 (1975)
- Jerzy Zabczyk:
A note on the exponential stability of a matrix Riccati equation of stochastic control. Kybernetika 11(3): 218-222 (1975)