The complexity of the travelling repairman problemFoto Afrati, Stavros Cosmadakis, Christos H. Papadimitriou, George Papageorgiou and Nadia PapakostantinouRAIRO-Theor. Inf. Appl., 20 1 (1986) 79-87DOI: https://doi.org/10.1051/ita/1986200100791