Busacca, C.A., Bartholomeyzik, T., Cheekoori, S., Grinberg, N., Lee, H., Ma, S., Saha, A., Shen, S. and Senanayake, C.H., "On the Racemization of Chiral Imidazolines" Journal of Organic Chemistry, 73(24), 2008, 9756.