Comparative analysis of two types of models for multirate linear multivariable discrete-time control systemsAstrov, Igor; RĂ¼stern, EnnuProceedings of the 13th International Conference "Systems for Automation of Engineering and Research" (SAER'99) : Varna, Bulgaria, September 18-19, 19991999 / p. 44-48 Two-rate state-space continuous-time models for subsystems of stochastic multivariable control systemsAstrov, Igor; RĂ¼stern, EnnuProceedings of the 13th International Conference "Systems for Automation of Engineering and Research" (SAER'99) : Varna, Bulgaria, September 18-19, 19991999 / p. 49-53