1. Food and Nutrition Program, Environment & Life Sciences Research Center; Kuwait Inst. for Scientific Research; Safat Kuwait
2. The School of Packaging; Michigan State Univ.; East Lansing Mich. U.S.A
3. Inst. Sabato; UNSAM-CNEA; San Martin Buenos Aires Argentina
4. Inst. de Materiales de Misiones (IMAM); CONICET-UNaM; Posadas Misiones Argentina