A number of official publications in the Soviet Union praised Ryazanov as a Marxologist in 1930. He was:[2]
“the most eminent Marxologist of our time”, Izvestia , 10 March 1930
“the most renowned and the most important of the Marxist scholars of our time” (Inprecor, no.26, 19 March 1930)
“under Riazonov’s direct scientific and administrative leadership, [the Marx-Engels Institute] accomplished impressive work …with his considerable scientific and investigative activity in the sphere of marxology”, Pravda
↑Roy Medvedev, Let History Judge: The Origins and Consequences of Stalinism. George Shriver, trans. Revised Edition. New York: Columbia University Press, 1989;