Zhu, Y.-M., & Yang, D.-K. (1999). Observation of Pattern Evolution During Homeotropic-Focal Conic Transition in Cholesteric Liquid Crystals. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.82.4855
Zhu, Yang-Ming, and Deng-Ke Yang. 1999. “Observation of Pattern Evolution During Homeotropic-Focal Conic Transition in Cholesteric Liquid Crystals”. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.82.4855.
Zhu, Y.-M., and D.-K. Yang. Observation of Pattern Evolution During Homeotropic-Focal Conic Transition in Cholesteric Liquid Crystals. Physical Review Letters, 14 June 1999, doi:10.1103/PhysRevLett.82.4855.