1. Demus, D. Chemical structures and mesogenic properties. in Handbook of Liquid Crystals Vol. 1 eds Demus D., Goodby J. W., Gray G. W., Spiess H.-W., Vill V. 115–187 (Wiley-VCH, Weinheim, 1998).
2. Goodby, J. W. Phase structures of calamitic liquid crystals. in Handbook of Liquid Crystals Vol. 2A eds Demus D., Goodby J. W., Gray G. W., Spiess H.-W., Vill V. 3–20 (Wiley-VCH, Weinheim, 1998).
3. Giroud-Godquin, A. M. Metal-containing liquid crystals. in Handbook of Liquid Crystals Vol. 2B eds Demus D., Goodby J. W., Gray G. W., Spiess H.-W., Vill V. 901–932 (Wiley-VCH, Weinheim, 1998).
4. Bruce, D. W. Metal-containing liquid crystals. in Inorganic Materials 2nd edn eds Bruce D. W., O’Hare D. 433–462 (John Wiley & Sons, New York, 1997).
5. Praefcke, K. & Singer, D. Charge-transfer systems. in Handbook of Liquid Crystals Vol. 2B eds Demus D., Goodby J. W., Gray G. W., Spiess H.-W., Vill V. 945–967 (Wiley-VCH, Weinheim, 1998).