1. GUILLEMIN , E. A. , 1957 ,Synthesis of Passive Nettvorks( John Wiley & Sons ), p. 358 .
2. Two Extensions of the Darlington Synthesis Procedure
3. Bridge-T and ladder gyrators
4. RAMACHANDRAN , V. , and SWAMY , M. N. S. , 1967 ,Proc. of the First Asilomar Conference on Circuits and Theory, Monterey , California , November , p. 299 .