1. Collision broadening in the exciton gas outside the electron-hole droplets in Ge
2. For a comprehensive review, see RICE T.M., Solid State Physics, ed. by SEITZ F., TURNBULL D. and EHRENREICH H. (in press)
3. HENSEL J.C., PHILLIPS T.G. and THOMAS G.A., (in press).
4. Liquid-Gas Phase Diagram of an Electron-Hole Fluid
5. Measurements of the phase diagram near Tc have also been made by HUANG C.C., MINISCALCO W.J. and SALAMON M.B., unpublished.