2 http://hdl.handle.net/10338.dmlcz/142192 2 Contents http://hdl.handle.net/10338.dmlcz/142196 Contents Fri, 05 Oct 2012 17:15:58 GMT Publications http://hdl.handle.net/10338.dmlcz/142195 Publications Fri, 05 Oct 2012 17:15:31 GMT Accretion process in comets http://hdl.handle.net/10338.dmlcz/142194 Accretion process in comets Fri, 05 Oct 2012 17:15:04 GMT Absolut brightness of comet Ikya-Seki 1965 f and of other comets of Kreutz's group http://hdl.handle.net/10338.dmlcz/142193 Absolut brightness of comet Ikya-Seki 1965 f and of other comets of Kreutz's group Fri, 05 Oct 2012 17:14:30 GMT