Heppke G, Kitzerow H-S, Lötzsch D, Papenfuß Ch. Blue phase mixtures exhibiting low fractions of a chiral compound experimental observation of some unusual properties. Liquid Crystals. 1990;8(3):407-418. doi:10.1080/02678299008047356
LibreCat: /record/40067
DOI: 10.1080/02678299008047356

Kitzerow H-S, Crooker PP, Kwok SL, Xu J, Heppke G. Dynamics of blue-phase selective reflections in an electric field. Physical Review A. 1990;42(6):3442-3448. doi:10.1103/physreva.42.3442
LibreCat: /record/40335
DOI: 10.1103/physreva.42.3442

Kitzerow H-S, Crooker PP, Kwok SL, Heppke G. A blue phase with negative dielectric anisotropy in an electric field. Statics and dynamics. Journal de Physique. 1990;51(12):1303-1312. doi:10.1051/jphys:0199000510120130300
LibreCat: /record/40340
DOI: 10.1051/jphys:0199000510120130300

Kitzerow H-S, Heppke G, Schmid H, Jérôme B, Pieranski P. First optical observation of Kossel diagrams in chiral smectic phases. Journal de Physique. 1990;51(18):2087-2099. doi:10.1051/jphys:0199000510180208700
LibreCat: /record/40336
DOI: 10.1051/jphys:0199000510180208700

Schlegel-Matthies K. Erstellung einer Ton-Dia-Schau zum Einsatz im schulischen Unterricht für den Kreis Lippe zum 40. Jubiläum des Art. 3 Abs. 2 Grundgesetz “Männer und Frauen sind gleichberechtigt.”; 1989.
LibreCat: /record/27967

Heppke G, Jéròme B, Kitzerow H-S, Pieranski P. Observation of a hexagonal blue phase in systems with negative dielectric anisotropy. Liquid Crystals. 1989;5(3):813-828. doi:10.1080/02678298908026387
LibreCat: /record/40069
DOI: 10.1080/02678298908026387

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
LibreCat: /record/40341
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
LibreCat: /record/40344
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
LibreCat: /record/35393
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
LibreCat: /record/35392
DOI: 10.1016/0022-2364(88)90219-3