1. Critical graphs, matchings and tours or a hierarchy of relaxations for the travelling salesman problem
:CORNUEJOLS, G. - PULLEYBLANK, W.R. Critical graphs, matchings and tours or a hierarchy of relaxations for the travelling salesman problem. Bonn : Institut für Ökonometrie und Operations Research, 1981. 25 s. Report, No. 81198-OR. [Copy count : 1, currently available 1, at library only 0]