@article{articleb8f054b3,
title   = {On the structure of the monotone asymmetric travelling salesman polytope I: hypohamiltonian facets},
author = {Grotschel, Martin and Wakabayashi, Yoshiko},
year = {1981},
doi = {10.1016/0012-365X(81)90021-2},
journal   = {Discrete Mathematics}
}