Pengfei He, Jin-Kao Hao, Qinghua Wu, Grouping memetic search for the colored traveling salesmen problem. Information Sciences, https://doi.org/10.1016/j.ins.2021.04.090, April 2021.

The source code de the GMA algorithm, the re-implemented ABC algorithm, the three sets of benchmark instances tested in the paper and our solution certificates are available here.