@book{gledocs_11858_00-1735-0000-0001-30FE-C, author = {Keil, Ralf}, title = {X-ray studies of ultraluminous infrared galaxies observed with XMM-Newton}, year = {2006}, publisher = {Univ. Hamburg}, note = { \url {http://hdl.handle.net/11858/00-1735-0000-0001-30FE-C}}, }