During this period Lewin published "Political Undercurrents in Soviet Economic Debates: From Bukharin to the Modern Reformers," which, along with the work of Princeton University professor Stephen F. Cohen, helped to restore the name and ideas of Nikolai Bukharin to the academic debate concerning the Soviet 1920s. Lewin noted that many of the same criticisms which Bukharin leveled against Stalin during the political battles of 1928 and 1929 in the USSR were later "adopted by current reformers as their own," thereby adding a contemporary importance to the study of the historical past.