@techreport{AbdelHamidBorndoerfer1994, author = {Atef Abdel-Aziz Abdel-Hamid and Ralf Bornd{\"o}rfer}, title = {On the Complexity of Storage Assignment Problems.}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-94-14}, language = {eng}, year = {1994} }