Brauer, Sascha. “Complexity of Single-Swap Heuristics for Metric Facility Location and Related Problems.”https://doi.org/10.1007/978-3-319-57586-5_11__In Lecture Notes in Computer Science, edited by Dimitris Fotakis, Aris Pagourtzis, and Vangelis Th. Paschos, 10236:116–27. Cham: Springer International Publishing, 2017.https://doi.org/10.1007/978-3-319-57586-5_11 .