@ARTICLE {33207,
author={P.  Babilotte and K.  Sathaye and V. Silva},
doi={10.1016/j.ijleo.2014.01.070},
journal={Optik},
title={Retardance properties of Twisted Ferro-electric Liquid Crystal},
year={2014},
month={July},
volume={125},
number={14},
pages={3646-3652},
ISSN={0030-4026}
}