1. A common mechanism of collective phenomena
2. Basic Notions of Condensed Matter Physics (Benjamin-Cummings, Menlo Park, 1984).
3. Theory of Superconductivity
4. and Hubbard Model and Anyon Superconductivity, Lecture Notes in Physics, Vol. 38 (World Scientific, Singapore, 1990).
5. Theory of Superconductivity (W.A. Benjamin, Reading, MA, 1964).