المؤلفون: Collins, Sheila, Kuhn, Cysnthia M., Petro, Ann E., Swick, Andrew G., Chrunyk, Boris A., Surwit, Richard S.

المصدر: Nature ; volume 380, issue 6576, page 677-677 ; ISSN 0028-0836 1476-4687

الاتاحة: http://dx.doi.org/10.1038/380677a0
http://www.nature.com/articles/380677a0
http://www.nature.com/articles/380677a0.pdf