1. Wilson, K., Generalized Wannier functions, Cornell University preprint.
2. BalianR., C. R. Acad. Sci. Paris 292, 1375 (1981).
3. LowF., in A Passion for Physics, G. F. Chew Volume, World Scientific Press, Singapore, 1985.
4. Rehr, J., Sullivan, D., Wilkins, J., and Wilson, K., Phase space Wannier functions in electronic structure calculations, Cornell University preprint (1987).
5. BacryH., GrossmannA., and ZakJ., Phys. Rev. B12, 1118 (1975).