Volume 49, Issue 97, April 2003, Pages 88-112
M.M. Ahmed; S.A. Sotohy
Volume 49, Issue 96, January 2003, Pages 214-227
S. Kh. Abd Elghaffar; M.I. Arafa; S.A. Sotohy
Volume 43.1, Issue 85, April 2000, Pages 37-50
M.A. Abdel-Rahman; M.M. Ahmed; S.A. Sotohy
Volume 41.1, Issue 81, April 1999, Pages 113-126
S.A. Sotohy; A.A. Mohamed
Volume 38.2, Issue 76, January 1998, Pages 16-28
M.M. Ahmed; S.A. Sotohy