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1.Шкатов Е.Ф. Пневматические струйные измерители скорости и расхода запыленных газовых потоков, М., ЦИНТИхимнефтемаш, 1978, с. 30.1. Shkatov E.F. Pneumatic jet meters for the speed and flow of dusty gas flows, M., TsINTihimneftemash, 1978, p. thirty.2.Авторское свидетельство СССР2. USSR author's certificate№ 579825, кл. G 01 F 1/00, 1973 (прототип ) .No. 579825, cl. G 01 F 1/00, 1973 (prototype).