Martine Labbé, Jacques-François Thisse. A tree-network has the fixed point property. Networks, 19(2):255-259, 1989. [doi]
@article{LabbeT89,
title = {A tree-network has the fixed point property},
author = {Martine Labbé and Jacques-François Thisse},
year = {1989},
doi = {10.1002/net.3230190207},
url = {http://dx.doi.org/10.1002/net.3230190207},
researchr = {https://researchr.org/publication/LabbeT89},
cites = {0},
citedby = {0},
journal = {Networks},
volume = {19},
number = {2},
pages = {255-259},
}