The use of sighting records to infer species extinctions: an evaluation of different methodsDOI: info:10.1890/08-0316.1v. 90No. 51291–1300
Rivadeneira, Marcelo M., Hunt, Gene, and Roy, K. 2009. "The use of sighting records to infer species extinctions: an evaluation of different methods." Ecology, 90, (5) 1291–1300. https://doi.org/10.1890/08-0316.1.