R. Deschenaux, I. Kosztics, J.-L. Marendaz, and H. Stoeckli-Evans, “1,3-Disubstituted Ferrocene-Containing Thermotropic Liquid Crystals: Synthesis, Mesomorphic Properties and the Crystal and Molecular Structure”, Chimia, vol. 47, no. 6, p. 206, Jun. 1993, doi: 10.2533/chimia.1993.206.