Gérard Cornuéjols, Denis Naddef, William R. Pulleyblank. Halin graphs and the travelling salesman problem. Math. Program., 26(3):287-294, 1983. [doi]
@article{CornuejolsNP83,
title = {Halin graphs and the travelling salesman problem},
author = {Gérard Cornuéjols and Denis Naddef and William R. Pulleyblank},
year = {1983},
doi = {10.1007/BF02591867},
url = {http://dx.doi.org/10.1007/BF02591867},
researchr = {https://researchr.org/publication/CornuejolsNP83},
cites = {0},
citedby = {0},
journal = {Math. Program.},
volume = {26},
number = {3},
pages = {287-294},
}