Volume 55, Issue 123, October 2009, Pages 1-19
AZHAR M. HASSAN; NEVEN A. EL-NISR; EMAN M.A. EL-NASER
Volume 40.1, Issue 79, October 1998, Pages 97-120
M. Mubarak; A.M. Abd-El Gawad; A.F. Bastawrous