1. Invariance and optimization in automatic systems with non-flexible and variable structure;Petrov,1965
2. Combined feedback-feedforward systems with variable structure;Dudin,1967
3. On the stability of the variable structure systems;Draženović,1968
4. Differential equations with discontinuous right part;Fillipov,1961
5. On a way of establishment of multivariable systems of automatic variable structure systems;Emel'ianov,1967