Polar Optical Phonons in Spherical Semiconductor Quantum Dots M.I. Vasilevskiy, A.G. Rolo, M.V. Artemyev, A.L. Rogach, N.P. Gaponik, and M.J.M. Gomes “RKFP conference - 5th Russian Conference on the Physics of Semiconductors”, vol.2, 10-14 de Setembro de 2001, Nizhni Novgorod, Rússia. http://www.ipm.sci-nnov.ru/eng/