Authors: Boris I Ratnikov; Piotr Cieplak; Kosi Gramatikoff; James Pierce; Alexey Eroshkin; Yoshinobu Igarashi; Marat Kazanov; Qing Sun; Adam Godzik; Andrei Osterman; Boguslaw Stec; Alex Strongin; Jeffrey W Smith Journal: Proc Natl Acad Sci U S A Date: 2014-09-22 Impact factor: 11.205