Algebraic formalism of differential p-forms and vector fields for nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2013 / p. 215-226 On the differentiation of a composite function with a generalized vector argument on homogeneous time scalesKaparin, Vadim; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2017 / p. 309-322 : tab https://doi.org/10.3176/proc.2017.3.04 http://www.ester.ee/record=b2355998*est