any one has these ebooks :
The Spice Book, Andrei Vladimirescu, John Wiley & Sons, Inc.,
1994, ISBN 0-471-60926-9.
PSpice and Circuit Analysis, John Keown, Third Edition, Merrill (Macmillan Publishing Company), 1997, ISBN 0-13-235458-6.
PICE2: A Program to Simulate Semiconductor Circuits...