 Their topics have included Marxian theory and value analysis, overdetermination, radical economics, international trade, business cycles, social formations, the Soviet Union, and comparing and contrasting Marxian and non-Marxian economic theories.Wolff's work with Resnick took Louis Althusser and Étienne Balibar's "Reading Capital" as its point of departure and developed a subtle reading of Karl Marx's "Capital" Volumes II and III in their influential "Knowledge and Class".For the authors, Marxian class analysis entails the detailed study of the conditions of existences of concrete forms of performance, appropriation, and distribution of surplus labor.