Papaefstathiou, GS Keuleers, R Milios, CJ Raptopoulou, CP and Terzis, A Desseyn, HO Perlepes, SP, The hexakis(N,N ‘-dimethylurea)cobalt(II) cation: A flexible building
block for the construction of hydrogen bonded networks, ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, (58), 74-84, 2003,