Volume 8, Issue 15.16, January 1981, Pages 93-98
M. MORAD; T. EL-ALLAWY; A. BARAKAT; S. EL-AMROUSI
Volume 7.1, Issue 13.14, January 1980, Pages 339-346
M. MORAD; S. EL-AMROUSI; A. BARAKAT; T. EL-ALLAWY.