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by Roniger, Luis
by Sznajder, Mario; Roniger, Luis
by Roniger, Luis; Senkman, Leonardo; Sosnowski, Saúl; et al.
by Roniger, Luis; Sznajder, Mario
by Roniger, Luis; Waisman, Carlos H
by Mario Sznajder , Luis Roniger
by Roniger, Sznajder; Roniger, Luis
by S. N. Eisenstadt , Luis Roniger