1. The General Theory of Alternating Current Machines
2. The two-reaction method for study of oscillatory phenomena in coupled alternators;Blondel;Revue Generale de l'Electricit e,1923
3. Synchronous machines-Part I and II-An extension of Blondel's two reaction theory;Doherty;AIEE Trans.,1926
4. Two-reaction theory of synchronous machines. Generalized method of analysis. Part I;Park;AIEE Trans.,1929