TY - RPRT TI - A complex ligase ribozyme evolved in vitro from a group I ribozyme domain AU - Jaeger, L. AU - Wright, M. C. AU - Joyce, G. F. AU - Bada, J. L. PY - 1999 UR - https://ntrs.nasa.gov/citations/20040141728 ID - 20040141728 ER -