Safinya CR, Ewert K, Ahmad A, Evans HM, Raviv U, Needleman DJ, Lin AJ, Slack NL, George C, Samuel CE. Cationic liposome?DNA complexes: from liquid crystal science to gene delivery applications. Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences [Internet].  2006;364 (1847) :2573-2596.