need 3 papers

can't find the abstracts
1, S. Mahapatra and Q.H.Bakir, ?Computer Aided Design and Evaluation of MIC Hybrid Coupled PIN Phase Shifter,? IEE-IERE Proc. (India),Vol.16.January 1978,pp.19-28

2, M..H..Kori and S.Mahapatra, ?Integral Analysis of Hybrid Coupled Semiconductor Phase Shifters,? IEE Proc., Vol.134,Pt. H.. NO.2.April 1987, pp.246-252

3, M.. Cuhaci and G..J.P. Lo, ?High Frequecy Microstrip Branchline Coupled Design with T-Junction Discontinuity Compensation,? Electronics Letters, Vol.17, 1981.pp.87-89