On stable cones of polynomials via reduced Routh parametersNurges, Ülo; Belikov, Juri; Artemtšuk, IgorKybernetika2016 / p. 461-477 https://doi.org/10.14736/kyb-2016-3-0461 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Transformation of nonlinear state equations into the observer form : necessary and sufficient conditions in terms of one-formsKaparin, Vadim; Kotta, ÜlleKybernetika2015 / p. 36-58 https://doi.org/10.14736/kyb-2015-1-0036 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS