A. Hörnig, U. Kölle, Martin U. Schmidt, G. E. Herberich, U. Englert:

Pseudosymmetric molecular shape resulting in disorder in the crystalline state,

Acta Chimica Hungarica: Models in Chemistry, 1993, 130, 405-414.

Acta Chim. Hung., 1993, 130, 405-414.