1. J. Sapriel and B. Djafari Rouhani, Surface Science Reports, 10: 189 (1989)
2. B. Jusserand and M. Cardona, Topics in Applied Physics, 66: 49 (1989)
3. See for example, M. Cardona, in: “Light Scattering from Semiconductor Structures and Superlattices”, D.J. Lockwood and J.F. Young, eds., Plenum, New York (1991)
4. See for example, Z.V. Popovic, M. Cardona, E. Richter, D. Strauch, L. Tapfer and K. Ploog, Phys. Rev. B, 40: 3040 (1989)
5. A. Fasolino, E. Molinari and A. Qteish, p.495 of this volume