Mongryong Lee, Sung-Taek Hur, Seung Ho Hong, Hyeo Jin Lee, Sung-Tae Shin, Suk-Won Choi*, Kigook Song, Mol. Cryst. Liq. Cryst., 2011, 550, 1-6.
http://www.tandfonline.com/doi/pdf/10.1080/15421406.2011.600173