Shu, J., Dudenko, D., Esmaeili, M., Park, J. H., Puniredd, S. R., Chang, J. Y., et al. (2013). Coexistence of Helical Morphologies in Columnar Stacks of Star-Shaped Discotic Hydrazones. Journal of the American Chemical Society, 135(30), 11075-11086. doi:10.1021/ja4029186.