1. S.V. Emel’yanov, Method of designing complex control algorithms using an error and its first time-derivative only, Automation and Remote Control, v.18, No.10, 1957.
2. A.M. Letov, Conditionally stable control systems (on a class of optimal system), Automation and Remote Control, v.18, No.7, 1957.
3. S.V. Emel’yanov, Burovoi I.A. and et. al., Mathematical models of processes in technology and development of variable structure control systems, Metallurgy, No.21, Moscow, 1964.
4. S.V. Emel’yanov, V.I. Utkin et.al., Theory of Variable Structure Systems. Nauka, Moscow, 1970.
5. S.V. Emel’yanov, V.A. Taran, On a class of variable structure control systems, Proc. of USSR Academy of Sciences, Energy and Automation, No.3, 1962.