On the relocation problem with a second working crew for resource recycling. - Bertrand M. T. Lin; Hsiao-Lan Huang (Int. J. Syst. Sci., 2006)

Tight complexity analysis of the relocation problem with arbitrary release dates. - Sergey Sevastyanov; Bertrand M. T. Lin; Hsiao-Lan Huang (Theor. Comput. Sci., 2011)