TY  - RPRT
TI  - Estimating trend precision and power to detect trends across grouped count data
AU  - B. R. Gray
AU  - M.M. Burlew
PY  - 2007
DO  - 10.1890/06-1714.1
UR  - https://pubs.usgs.gov/publication/70031321
ID  - 70031321
ER  -