Beer, P., Drew, M., & Ogden, M. (1997). First- and second-sphere co-ordination of a lanthanum cation by a calix[4]arene tetraamide in the partial-cone conformation.

Beer, P., M. Drew, and M. Ogden. First- and Second-sphere Co-ordination of a Lanthanum Cation by a Calix[4]arene Tetraamide in the Partial-cone Conformation. 1997.

Beer, P., et al. First- and Second-sphere Co-ordination of a Lanthanum Cation by a Calix[4]arene Tetraamide in the Partial-cone Conformation. 1997.