00689nam#a2200169#i#450# EN\RIOR\book\3381 20251208032048.1 20250731d2025####ek#y0engy0150####ca RU Functioning of the frequency-time support system for railway transport under the influence of destabilizing factors Monography Moscow Publishing Center RIOR 2025 248 с. Monography local Электросвязь. Техника электросвязи. 621.39 Электрическая связь. Радиосвязь и радиовещание. 3288 bbk Oparin Evgeniy Valer'evich riorpub.com