Lorenzo Savioli and Raman Velayudhan 

Hoda Atta and John Reeder

M. Malik, M.A.A. Hassali, A.A. Shafie and A. Hussain 

Z. Gezelbash, H. Vatandoost, M.R. Abai, A. Raeisi, Y. Rassi, A.A. Hanafi-Bojd, H. Jabbari  and F. Nikpoor 

S. Vyas, B. Puwar, V. Patel, G. Bhatt, S. Kulkarni  and M. Fancy

H.K. Bassiouny, A.A. Hasab, N.A. El-Nimr, L.A. Al-Shibani and A.A. Al- Waleedi

L. Al-Shaar, M. Chaaya, N. Ghosn and Z. Mahfoud

N. Ben Mansour, H. Skhiri, H. Aounallah-Skhiri, M. Hsairi et S. Hajjem

I. Wahdan, N. El-Nimr, R. Kotb  and A. Wahdan 

L. Metwally, N. Gomaa  and R. Hassan