Ryoji Yanai, Lama Mulki, Eiichi Hasegawa, Kimio Takeuchi, Harry Sweigard, Jun Suzuki, Philipp Gaissert, Demetrios G. Vavvas, Koh-Hei Sonoda, Michael Rothe, Wolf-Hagen Schunck, Joan W. Miller, and Kip M. Connor (2014) PNAS 2014 : 1401191111v1-201401191
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