The instances (14 instances) posted here are original to the work of Srour and van de Velde (2011) in which they were used as part of the verification dataset. They were generated using an ATSP generator based on the crane generator of Cirasella, et al (2001).
The source code for the crane2 generator may be found in Appendix B of:
Srour, F. J., (2010). Dissecting Drayage: An Examination of Structure, Information, and Control in Drayage Operations, ERIM Ph.D. Series Research in Management, No. 186, ISBN: 978-9-05892-226-7.
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.