TY  - RPRT
TI  - Optimal allocation of point-count sampling effort
AU  - Richard J. Barker
AU  - John R. Sauer
AU  - William A. Link
PY  - 1993
DO  - 10.2307/4088630
UR  - https://pubs.usgs.gov/publication/5222806
ID  - 5222806
ER  -