1. BALABANIAN , N. , and BICKART , T. A. , 1969 ,Electrical Network Theory( New York John Wiley & Sons ), p. 123 .
2. Network transposition and its application in synthesis
3. Vratsanos' Theorem and Twoport Reciprocity
4. Two Extensions of the Darlington Synthesis Procedure
5. MITRA , S. K. , 1969 ,Analysis and Synthesis of Linear Active Networks( New York John Wiley & Sons ), p. 56 .