Marx Brothers appeared, sometimes with Chico and Zeppo caricatured, in cartoons starring Mickey Mouse, Flip the Frog and others. In the "Airwolf" episode 'Condemned', four anti-virus formulae for a deadly plague were named after the four Marx Brothers. In "All in the Family", Rob Reiner often did imitations of Groucho, and Sally Struthers dressed as Harpo in one episode in which she (as Gloria Stivic) and Rob (as Mike Stivic) were going to a Marx Brothers film festival, with Reiner dressing as Groucho. Gabe Kaplan did many Groucho imitations on his sit-com "Welcome Back, Kotter" and Robert Hegyes sometimes imitated both Chico
Marx after Sraffa after Sraffa" as another critique of Marx's "Capital", and accused Steedman of misunderstandings of Marx similar to those made by Paul Sweezy in his "The Theory of Capitalist Development" (1942). Marx after Sraffa Marx after Sraffa is a 1977 book about Marxist economics by the economist Ian Steedman, in which the author argues against the labor theory of value. Steedman has been criticized for alleged misunderstandings of Karl Marx. The economist Heinz D. Kurz reviewed "Marx after Sraffa" in "Kyklos". The political scientist David McLellan wrote in the 1995 edition of his "" that Steedman's reading of Marx has been