1. I. Tadwee, S. Shahi, V. Ramteke, et al., Int. J. Pharm. Res. Sci., 1, 6 – 11 (2012).
2. Z. Qiang, A. R. Oganov, and Z. Xiang-Feng, Top Curr. Chem., 2014, 345 (2014).
3. C. C. Mueller-Goymann, Liquid crystals in drug delivery. in: J. Swarbrick, J. C. Boylan (Eds.), Encyclopedia of Pharmaceutical Technology, Marcel Dekker, New York – Basel (2002), pp. 834 – 853.
4. L. K. Omray, Curr. Trends Technol. Sci., 2, 347 – 351, (2013).
5. C. L. Stevenson, D. B. Bennett, and D. Lechuga-Ballesteros, J. Pharm. Sci., 94, 1861 – 1880 (2005).