1. Adámek, J., Herrlich, H., Strecker, G.E.: Abstract and concrete categories: the joy of cats. Repr. Theory Appl. Categ. 17, 1–507 (2006). (Reprint of the 1990 original [Wiley, New York; MR1051419])
2. Bankston, P.: Road systems and betweenness. Bull. Math. Sci. 3(3), 389–408 (2013)
3. Bankston, P.: When Hausdorff continua have no gaps. Topol. Proc. 44, 177–188 (2014)
4. Bankston, P.: The antisymmetry betweenness axiom and Hausdorff continua. Topol. Proc. 45, 189–215 (2015)
5. Düvelmeyer, N., Wenzel, W.: A characterization of ordered sets and lattices via betweenness relations. Results Math. 46(3–4), 237–250 (2004)