1. Dynamics of Mechanical and Electro-mechanical Systems;Crandall,1968
2. The algebra and topology of electrical networks;Bryant;I.E.E. Mono.,1960
3. A classification of physical variables and its application in variational methods;Jones;J. Franklin Inst.,1971
4. Kron's method of tearing;Franksen;The Fourth Power Industry Computer Application Conf.,1965
5. Advanced Mechanics;Groesberg,1968