Marxist guerrillas groups were the Organization of Iranian People's Fedai Guerrillas (OIPFG) and the breakaway Iranian People's Fedai Guerrillas (IPFG), and some minor groups. see "Ideology, Culture, and Ambiguity: The Revolutionary Process in Iran", Theory and Society, Vol. 25, No. 3 (Jun., 1996), pp. 349–88.