Heppke G, Jérôme B, Kitzerow H-S, Pieranski P. Electrostriction of the cholesteric blue phases BPI and BPII in mixtures with positive dielectric anisotropy. Journal de Physique. 1989;50(19):2991-2998. doi:10.1051/jphys:0198900500190299100

Heppke G, Jérôme B, Kitzerow H-S, Pieranski P. Electrostriction of BPI and BPII for blue phase systems with negative dielectric anisotropy. Journal de Physique. 1989;50(5):549-562. doi:10.1051/jphys:01989005005054900

Halstead TK, Schmidt C, Spiess HW, Schoellhorn R, Mueller-Warmuth W, Moeller H. Magnetic-field-induced orientation of crystallites in powders of layered intercalation compounds detected by NMR. The Journal of Physical Chemistry. 1988;92(26):7167-7168. doi:10.1021/j100337a003

Schmidt C, Blümich B, Spiess HW. Deuteron two-dimensional exchange NMR in solids. Journal of Magnetic Resonance (1969). 1988;79(2):269-290. doi:10.1016/0022-2364(88)90219-3

Kitzerow H-S, Heppke G, Oestreicher F, Kitzerow H-S, Krumrey M. Blue phase liquid crystal system, method of operation and its use . Published online 1988.

Heppke G, Kitzerow H-S, Oestreicher F, Quentel S, Ranft A. Electrooptic Effect in a Non-Polar Nematic Discotic Liquid Crystal. Molecular Crystals and Liquid Crystals Letters. 1988;6(3):71-79. doi:10.1080/01406566.1988.10767023

Schmidt C, Blümich B, Wefing S, Kaufmann S, Spiess HW. Molecular motions from two-dimensional NMR of powders: Comparison of rotational jumps and diffusive reorientations. Berichte der Bunsengesellschaft für physikalische Chemie. 1987;91(11):1141-1145. doi:10.1002/bbpc.19870911113

Heppke G, Kitzerow H-S, Krumrey M. Angular Dependence of Blue Phase Selective Reflection in the Electric Field. Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics. 1987;150(1):265-276. doi:10.1080/00268948708074802

Schmidt C, Wefing S, Blümich B, Spiess HW. Dynamics of molecular reorientations: direct determination of rotational angles from two-dimensional NMR of powders. Chemical Physics Letters. 1986;130(1-2):84-90. doi:10.1016/0009-2614(86)80431-6

Heppke G, Oestreicher F, Kitzerow H-S, Krumrey M. Optisches System mit einer Flüssigkristallzelle, Verfahren zu seinem Betrieb und seine Verwendung. Published online 1986.

Schmidt C, Kuhn KJ, Spiess HW. Distribution of Correlation Times in Glassy Polymers From Pulsed Deuteron NMR. Progress in Colloid and Polymer Science. 1985;71:71-76.

HEPPKE G, Kitzerow H-S, KRUMREY M. ELECTROOPTICAL BEHAVIOR OF CHOLESTERIC BLUE PHASES WITH NEGATIVE DIELECTRIC ANISOTROPY. MOLECULAR CRYSTALS AND LIQUID CRYSTALS. 1985;1(3-4):117-122.

HEPPKE G, Kitzerow H-S, KRUMREY M. ELECTRIC-FIELD INDUCED VARIATION OF THE REFRACTIVE-INDEX IN CHOLESTERIC BLUE PHASES. MOLECULAR CRYSTALS AND LIQUID CRYSTALS. 1985;2(1-2):59-65.