Boaz, N. T., Bernor, R. L., Brooks, Alison S., Cooke, H. B. S., Deheinzelin, J., Dechamps, R., Delson, E., Gentry, A. W., Harris, J. W. K., Meylan, P., Pavlakis, P. P., Sanders, W. J., Stewart, K. M., Verniers, J., Williamson, P. G., and Winkler, A. J. 1992. "A New Evaluation of the Significance of the Late Neogene Lusso Beds, Upper Semliki Valley, Zaire." Journal of Human Evolution, 22, (6) 505–517.