TY  - RPRT
TI  - Engineering new functions and altering existing functions.
AU  - Z Shao
AU  - F H Arnold
PY  - 1996
DO  - 10.1016/s0959-440x(96)80117-5
UR  - https://pubmed.ncbi.nlm.nih.gov/8794158/
ID  - 8794158
ER  -