Dissipative Systems in Quantum Optics van Oystaeyen During the last ten years O.P During the last ten years studies have shown that GHD in adulthood is a far reaching syndrome associated with abnormal body composition Auf dem europäischen Kontinent nimmt die Schweiz eine Sonderstellung ein: Sie ist umgeben von Mitgliedstaaten der EU und des EWR The first is typical of spectroscopy: one considers the interaction between radi ation and a single atom This book contains five complete and up to date contributions on the theory and experiments of three coherence effects in radiation matter interaction: resonance fluorescences