@techreport{AscheuerFischettiGroetschel1997, author = {Norbert Ascheuer and Matteo Fischetti and Martin Gr{\"o}tschel}, title = {A polyhedral study of the asymmetric travelling salesman problem with time windows}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-97-11}, language = {eng}, year = {1997} }