TY  - RPRT
TI  - C4 photosynthetic modifications in the evolutionary transition from land to water in aquatic grasses
AU  - Jon E. Keeley
PY  - 1998
DO  - 10.1007/s004420050566
UR  - https://pubs.usgs.gov/publication/1007995
ID  - 1007995
ER  -