TY  - JOUR
T1  - Regularized estimation of vertical total electron content from Global Positioning System Data
A1  - Arikan, F.
A1  - Erol, C.B.
A1  - Arikan, O.
JA  - J of Geophysical Research-Space Physics
Y1  - 2003
VL  - 108
SP  - 1469
N1  - WOS upd 29-03-04
ER  -