00564naa#a2200181#i#450# EN\\bibl\81818 20241124225411.7 2412-9186 20160625b2016####ek#y0engy0150####ca RUS RU Telegraph, railways and safety protection of train traffic Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2016 11 с. Journal article local . 656.25 (09) RUS Kudryashov V A atjournal.ru