David B. Weishampel; Eric W.A. Mulder; Rudi W. Dortangs; John W.M. Jagt; Coralia-Maria Jianu; Marcel M.M. Kuypers; Hans H.G. Peeters; Anne S. Schulp. Dinosaur Remains from the Type Maastrichtian: An Update. njg 1999, 357-365.