need papers:

have any body the papers:
1) schiebold "Getting back to the basic of oscillator design" Microwave journal 1998 p.336
2)G. Strid, "S- parameters simplify accurate Vco design" Microwaves, may 1975 p. 35.
3)J. Kitchen "octave bandwidth varacotr -tuned oscillators." Microwave J may1987 p.347