TY  - GEN
AU  - Usama Mohammed Abdelsalam Ahmed
AU  - Mahmoud Sabry Mohammed Saif , 
AU  - Zeinab Ayad Abdelhamid , 
TI  - Some properties of differential operators / 
PY  - 2004///
CY  - Cairo : 
PB  - Usama Mohammed Abdelsalam Ahmed , 
KW  - Differential Operators
N1  - Thesis (M.Sc.) - Cairo University - Elfayoum Branch - Faculty Of Science - Department Of Mathematics; Issued also as CD
UR  - http://172.23.153.220/th.pdf
ER  -