1. Dracorex hogwartsia, n. gen., n. sp., a spiked, flat-headed pachycephalosaurid dinosaur from the Upper Cretaceous Hell Creek Formation of South Dakota;Bakker;New Mexico Museum of Natural History and Science Bulletin,2006
2. Small-bodied ornithischian dinosaurs from the Middle Jurassic of Sichuan, China;Barrett;Journal of Vertebrate Paleontology,2005
3. Fossil reptiles from Mongolia and Kansu;Bohlin;Sino-Swedish Expedition Publication,1953
4. The structure and relationships of Protoceratops;Brown;Annals of the New York Academy of Sciences,1940
5. The Late Cretaceous dinosaurs of Shandong, China: Old finds and new interpretations;Buffetaut,1995