sentences:  Additional modern thinkers include Joyce Rothschild, Jessica Gordon Nembhard, Corey Rosen et al., William Foote Whyte, Gar Alperovitz, Seymour Melman, Mario Bunge, Richard D. Wolff and David Schweickart.In Europe, important contributions came from England and Italy, especially from Will Bartlett, Virginie Perotin, Bruno Jossa, Stefano Zamagni, Carlo Borzaga, Jacques Defourny and Tom Winters.A major historical debate in co-operative economics has been between co-operative federalism and co-operative individualism.