Yujing Liu, Alexander Hoffmann, Alexander Grinberg, Heiner Westphal, Michael P. McDonald, Katherine M. Miller, Jacqueline N. Crawley, Konrad Sandhoff, Kinuko Suzuki, Richard L. Proia
Proc Natl Acad Sci U S A. 1997 Jul 22; 94(15): 8138–8143. doi: 10.1073/pnas.94.15.8138