My dinosaur group "Grupo Aragosaurus" from Universidad de Zaragoza has just upload a beta version of our database of dinosaur bibliography. You can search through 9634 references (more than  four hundred of them are about eggshells!!). At this moment it only searches by title and author and runs only in spanish (search for "huevos" and you will find all the paleo-oological references) but we are still working on it. You also can download all the pdfs of the Grupo Aragosaurus. The web site is www.aragosaurus.com 
Hope you find it useful