Citation: Khalifah, P.; Huang, Q.; Zandbergen, H.W.; Ho, D.M.; Cava, R.J. (2000). La7 Ru3 O18 and La4.87 Ru2 O12: geometric frustration in two closely related structures with isolated Ru O6 octahedra. Journal of Solid State Chemistry, 155, pp. 189-197.