TY  - RPRT
TI  - A guide for selected sampling methods for different source conditions.
AU  - W C Achinger
AU  - R T Shigehara
PY  - 1968
DO  - 10.1080/00022470.1968.10469175
UR  - https://pubmed.ncbi.nlm.nih.gov/5686385/
ID  - 5686385
ER  -