TY - RPRT TI - Crossing fitness valleys via double substitutions within codons AU - Belinky, F. AU - Sela, I. AU - Rogozin, I. B. AU - Koonin, E. V. PY - 2019 DO - 10.1101/511469 UR - https://www.biorxiv.org/content/10.1101/511469v1 ID - 10.1101/511469 ER -