Volume 42.1, Issue 83, October 1999, Pages 200-215
A. Sadiek; Sohair Z. Hussein
Volume 32.1, Issue 63, October 1994, Pages 126-130
M.A. SIAM; G.H. SALEM; NAHID H. GHONEIM; S.A. MICHAEL; MAGDA A.H. EL-REFAY