Venkatasubramanian, U., Donohoe, D.J., Ellis, D., Giles, B.T., Macgregor, S.A., Robertson, S., Rosair, G.M., Welch, A.J., Batsanov, A.S., Boyd, L.A., Copley, R.C.B., Fox, M.A., Howard, J.A.K., Wade, K., "The synthesis and molecular and crystal structures of 1-methyl-2-carboxy-1,2-dicarba-closo-dodecaborane(12), 1-phenyl-2-carboxy-1,2-dicarba-closo-dodecaborane(12) and 1-phenyl-2-benzoyl-1,2-dicarba-closo-dodecaborane(12)", Polyhedron, 2004