1. Semiconductor Optics (Springer, Berlin, 1997).
2. Condensation effects of excitons
3. and , Electron–Hole Droplets in Semiconductors (North-Holland, Amsterdam, 1983).
4. The electron-hole liquid in a semiconductor
5. in: Bose–Einstein Condensation, edited by A. Griffin, D. W. Snoke, and S. Stringari (Cambridge University Press, Cambridge, 1995), p. 355.