Huber, Klaus. “Interactions in Mixed Interfaces of Binary Surfactant Solutions.”https://doi.org/10.1016/0021-9797(91)90164-4__Journal of Colloid and Interface Science 147, no. 2 (1991): 321–32.https://doi.org/10.1016/0021-9797(91)90164-4 .
LibreCat: /record/42057
DOI: 10.1016/0021-9797(91)90164-4

Heppke, G., Heinz-Siegfried Kitzerow, D. Lötzsch, and Ch. Papenfuß. “Blue Phase Mixtures Exhibiting Low Fractions of a Chiral Compound Experimental Observation of Some Unusual Properties.”https://doi.org/10.1080/02678299008047356__Liquid Crystals 8, no. 3 (1990): 407–18.https://doi.org/10.1080/02678299008047356 .
LibreCat: /record/40067
DOI: 10.1080/02678299008047356

Heppke, G., B. Jéròme, Heinz-Siegfried Kitzerow, and P. Pieranski. “Observation of a Hexagonal Blue Phase in Systems with Negative Dielectric Anisotropy.”https://doi.org/10.1080/02678298908026387__Liquid Crystals 5, no. 3 (1989): 813–28.https://doi.org/10.1080/02678298908026387 .
LibreCat: /record/40069
DOI: 10.1080/02678298908026387