Aliyeva Saadat T. «Necessary optimality conditions for fractional-order difference equations with delay» // Tomsk State University Journal of Control and Computer Science 2025. №73 C.4-14
Mansimov Kamil' B.O., Rasulova Shahla M.G. «On optimality of singular controls in an optimal control problem» // Tomsk State University Journal of Mathematics and Mechanics 2018. №54 C.17-33
