* Wilf, Herbert S. and Harary, Frank (Editors) (1971), "Mathematical Aspects of Electrical Networks Analysis (Siam-Ams Proceedings, Volume 3), Symposium in Applied Mathematics", American Mathematical Society.
* Wilf, Herbert S. and Harary, Frank (Editors) (1971), "Mathematical Aspects of Electrical Networks Analysis (Siam-Ams Proceedings, Volume 3), Symposium in Applied Mathematics", American Mathematical Society.