Rajiv Manohar, Piyush Shukla, Isht Vibhu, Manisha Gupta and J P Shukla 2000. Study of Dielectric Anisotropy , Density and Optical Transmittance of Cholestryl Propionate, Cholestryl Benzoate and their Mixtures. Journal of International Academy of Physical Sciences. 4, 1-4 (Dec. 2000), 11–19.