6th Int. Conf. on Squeezed States and Uncertainty Relations (ICSSUR99), Naples, Italy, 1999 info:cnr-pdr/source/autori:S. De Nicola, R. Fedele, and V.I. Manko/congresso_nome:6th Int. Conf. on Squeezed States and Uncertainty Relations (ICSSUR99)/congresso_luogo:Naples, Italy/congresso_data:1999/anno:1999/pagina_da:/pagina_a:/intervallo_pagine