TY  - GEN
AU  - Ashraf Aly Elkoushy
AU  - Mohamed Mohamed Amin Somaida , 
AU  - Wilhelm Benning , 
AU  - Youssef Ibrahim Abdelaziz , 
TI  - Refinement of surveying data from blunders by L1 - norm techniques / 
PY  - 1999///
CY  - Port Said : 
PB  - Ashraf Aly Elkoushy , 
N1  - Thesis (Ph.D.) - Suez Canal University - Faculty Of Engineering , Port Said - Department Of Civil Engineering
UR  - http://172.23.153.220/th.pdf
ER  -