The instances (66 instances) posted here are original to the work of Srour and van de Velde (2011). They are considered real-world instances as they were derived from the operational data of a drayage provider at the Port of Rotterdam.
The appropriate citation for these instances is:
F. Jordan Srour, Steef van de Velde, Are Stacker Crane Problems easy? A statistical study, Computers & Operations Research, In Press, Corrected Proof, Available online 1 July 2011, ISSN 0305-0548, DOI: 10.1016/j.cor.2011.06.017.
(http://www.sciencedirect.com/science/article/pii/S0305054811001791)
Note, these instances are in TSP LIB format.