00854naa#a2200217#i#450# EN\\bibl\46396 20241227112909.5 2072-9502 20211029b2021####ek#y0engy0150####ca RU POSSIBILITIES OF CYBER-PHYSICAL APPROACH TO STUDYING FREQUENCY PROPERTIES OF CLOSED SYSTEM WITH INCOMPLETE INFORMATION ABOUT CONTROL OBJECT MODEL Journal article Astrakhan Astrakhan State Technical University 2021 13 с. Journal article local Различные отрасли промышленности и ремесла. 68 Krushel Elena Georgievna Potafeeva Ekaterina Sergeevna Ogar Tatyana Petrovna Stepanchenko Ilya Viktorovich Kharitonov Ivan Mikhailovich vestnik.astu.org