TY - JOUR A1 - Eleftheratos, K. A1 - Zerefos, C. S. A1 - Zanis, P. A1 - Balis, D. S. A1 - Tselioudis, G. A1 - Gierens, K. A1 - Sausen, R. T1 - A twenty-year study on natural and manmade global interannual fluctuations of cirrus cloud cover JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 7 IS - 1 SP - 93 EP - 126 Y1 - 2007/01/05 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/7/93/2007/ L1 - http://www.atmos-chem-phys-discuss.net/7/93/2007/acpd-7-93-2007.pdf DO - 10.5194/acpd-7-93-2007 ER -