E. Delson, K. Harvati, D. Reddy, L. F. Marcus, K. Mowbray, G. J. Sawyer, T. Jacob, and S. M\'arquez. The Sambungmacan 3 Homo erectus calvaria: a comparative morphometric and morphological analysis. Anat. Rec., volume 262, issue 4, pages 380-397, April 2001.

E. Delson, K. Harvati, D. Reddy, L. F. Marcus, K. Mowbray, G. J. Sawyer, T. Jacob, and S. Márquez. The Sambungmacan 3 Homo erectus calvaria: a comparative morphometric and morphological analysis. Anat. Rec., volume 262, issue 4, pages 380-397, April 2001.