S. P. Avann, Metric ternary distributive semilattices, Proceedings of the American Mathematical Society, pp.407-414, 1961.

H. J. Bandelt and J. Hedlíková, Median algebras. Discrete mathematics, pp.1-30, 1983.

H. J. Bandelt, Discrete ordered sets whose covering graphs are median, Proceedings of the American Mathematical Society, pp.6-8, 1984.
DOI : 10.1090/S0002-9939-1984-0735552-6

G. Birkhoff and S. A. Kiss, A ternary operation in distributive lattices, Bulletin of the American Mathematical Society, vol.53, issue.8, pp.749-752, 1947.
DOI : 10.1090/S0002-9904-1947-08864-9

M. Couceiro and B. Teheux, An Arrow-like theorem over median algebras, Proceedings of the DA2PL 2014 Conference, pp.72-75, 2014.

B. A. Davey and H. A. Priestley, Introduction to lattices and order, 2002.
DOI : 10.1017/CBO9780511809088

G. , G. Wehrung, and R. Wille, General lattice theory New appendices by the author with, 1998.

A. A. Grau, Ternary Boolean algebra, Bulletin of the American Mathematical Society, vol.53, issue.6, pp.567-572, 1944.
DOI : 10.1090/S0002-9904-1947-08834-0

URL : http://projecteuclid.org/download/pdf_1/euclid.bams/1183510797

J. R. Isbell, Median algebra. Transactions of the, pp.319-362, 1980.
DOI : 10.1090/s0002-9947-1980-0574784-8

M. Sholander, Trees, lattices, order, and betweenness, Proceedings of the American Mathematical Society, vol.3, issue.3, pp.369-381, 1952.
DOI : 10.1090/S0002-9939-1952-0048405-5

M. Sholander, Medians, lattices, and trees, Proceedings of the American Mathematical Society, vol.5, issue.5, pp.808-812, 1954.
DOI : 10.1090/S0002-9939-1954-0064750-3