Fred R. McMorris, Henry Martyn Mulder, Beth Novick, Robert C. Powers. Five axioms for location functions on median graphs. Discrete Math., Alg. and Appl., 7(2), 2015. [doi]
@article{McMorrisMNP15,
title = {Five axioms for location functions on median graphs},
author = {Fred R. McMorris and Henry Martyn Mulder and Beth Novick and Robert C. Powers},
year = {2015},
doi = {10.1142/S1793830915500135},
url = {http://dx.doi.org/10.1142/S1793830915500135},
researchr = {https://researchr.org/publication/McMorrisMNP15},
cites = {0},
citedby = {0},
journal = {Discrete Math., Alg. and Appl.},
volume = {7},
number = {2},
}