Kissau, L., Stahl, P., Mazitschek, R., Giannis, A., & Waldmann, H. (2003). Development of natural product-derived receptor tyrosine kinase inhibitors based on conservation of protein domain fold. Journal of Medicinal Chemistry, 46(14): 1, pp. 2917-2931. Retrieved from http://dx.doi.org/10.1021/jm0307943.