TY  - RPRT
TI  - A simplified closing-volume method suitable for field use.
AU  - M Green
AU  - D M Travis
PY  - 1972
DO  - 10.1016/s0140-6736(72)92536-6
UR  - https://pubmed.ncbi.nlm.nih.gov/4116605/
ID  - 4116605
ER  -