Metallomesogens with a Cholesteric Mesophase
M.J. Baena, J. Buey, P. Espinet, H.-S. Kitzerow, G. Heppke, Angewandte Chemie International Edition in English 32 (1993) 1201–1203.

Chromaticity of polymer-dispersed cholesteric liquid crystals
H.-S. Kitzerow, P.P. Crooker, G. Heppke, Liquid Crystals 12 (1992) 49–58.

Behaviour of polymer dispersed cholesteric droplets with negative dielectric anisotropy in electric fields
H.-S. Kitzerow, P.P. Crooker, Liquid Crystals 11 (1992) 561–568.

Microscopic observations of axial and radial nematic droplets for a dual-frequency addressable liquid crystal
H.-S. Kitzerow, F. Xu, P.P. Crooker, Liquid Crystals 12 (1992) 1019–1024.

Blue phase mixtures exhibiting low fractions of a chiral compound experimental observation of some unusual properties
G. Heppke, H.-S. Kitzerow, D. Lötzsch, Ch. Papenfuß, Liquid Crystals 8 (1990) 407–418.

Observation of a hexagonal blue phase in systems with negative dielectric anisotropy
G. Heppke, B. Jéròme, H.-S. Kitzerow, P. Pieranski, Liquid Crystals 5 (1989) 813–828.