1. Abramenko, P., Brown, K.: Buildings: Theory and applications. Springer, Berlin (2008)
2. Abramenko, P., Rémy, B.: Commensurators of some non-uniform tree lattices and Moufang twin trees. In: Proc. Inst. Wrk.shps. Int. Conf. Essays in Geometric Group Theory, vol. 9, pp. 79–104 (2009)
3. Bourbaki, N.: Groupes et algèbres de Lie, Chapitre IV–VI, Hermann, Paris (1968)
4. Bridson, M.R., Haefliger, A.: Metric Spaces of Non-positive Curvature. Springer, Berlin (2000)
5. Caprace, P.-E., Rémy, B.: Simplicity and superrigidity of twin building lattices. Invent. Math. 176, 169–221 (2009)