TY  - RPRT
TI  - Coevolution.
AU  - D H Janzen
AU  - C H Muller
PY  - 1969
DO  - 10.1126/science.165.3891.415
UR  - https://pubmed.ncbi.nlm.nih.gov/5789440/
ID  - 5789440
ER  -