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Nagy, G. and Salhi, S. (1998) The many-to-many location-routing problem. TOP, 6 (2). pp. 261-275. ISSN 1134-5764 (Print), 1863-8279 (Online) (doi:https://doi.org/10.1007/BF02564791)

Nagy, G. and Salhi, S. (1996) Nested heuristic methods for the location-routeing problem. Journal of the Operational Research Society, 47 (9). pp. 1166-1174. ISSN 0160-5682 (Print), 1476-9360 (Online)