M.L. Casanovas, X. Pereda Suberbiola, J.V. Santafe, and D.B. Weishampel. 1999. “A Primitive Euhadrosaurian Dinosaur from the Uppermost Cretaceous of the Ager Syncline (southern Pyrenees, Catalonia)”. Netherlands Journal of Geosciences, January, 345-56. https://njgjournal.nl/index.php/njg/article/view/12306.