TY  - RPRT
TI  - Monitoring programs need to take into account imperfect species detectability
AU  - M. Kery
AU  - Hans Schmid
PY  - 2004
DO  - 10.1078/1439-1791-00194
UR  - https://pubs.usgs.gov/publication/5224290
ID  - 5224290
ER  -