Microspectroscopic Evidence of Cretaceous Bone Proteins Lindgren, Johan ; Uvdal, Per ; Engdahl, Anders ; Lee, Andrew H. ; Alwmark, Carl ; Bergquist, Karl-Erik ; Nilsson, Einar ; Ekström, Peter ; Rasmussen, Magnus ; Douglas, Desirée A. ; Polcyn, Michael J. ; Jacobs, Louis L. Abstract Publication: PLoS ONE Pub Date: April 2011 DOI: 10.1371/journal.pone.0019445 Bibcode: 2011PLoSO...619445L