Mohamed AbdelhakemCanadian International College -Mathematics Department - Faculty of Science - Helwan UniversityPotvrđena adresa e-pošte na science.helwan.edu.eg
M El-KadyProfessor of Math, Helwan University, Cairo , Egypt & Canadian International College CICPotvrđena adresa e-pošte na cic-cairo.com
Dumitru BaleanuLebanese American University,Beirut, Professor at Institute of Space Sciences,BucharestPotvrđena adresa e-pošte na lau.edu.lb