Balti, Moldova Alecu Russo State University
Angela C.D.
Dnipropetrovsk, Ukraine
Dub B.S.
Engels, Russia Engels Technological Institute (branch of) Saratov State Technical University named after Yu.A. Gagarin
Zorya I.V.
Petrov D.V.
Engels Technological Institute (branch) Saratov State Technical University named after Gagarin Yu.A.
Mostovoy A.S., Plakunova E.V., Panova L.G., Ivanov E.Ya.
Engels technological institute
Ulyanova V.V.
Engels Technological Instutue
Petrov D.V.
Saratov State Technical University named after Yu. A. Gagarin
Pevneva A.S.
Kirov, Russia Vyatka State University of Humanities
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