TY - RPRT TI - Determining divergence times with a protein clock: update and reevaluation AU - Feng, D. F. AU - Cho, G. AU - Doolittle, R. F. AU - Bada, J. L. PY - 1997 UR - https://ntrs.nasa.gov/citations/20040172843 ID - 20040172843 ER -