Ecological Archives E095-190-A3
Tobias Roth, Nicolas Strebel, Valentin Amrhein. 2014. Estimating unbiased phenological trends by adapting site-occupancy models. Ecology 95:2144–2154. http://dx.doi.org/10.1890/13-1830.1
Appendix C. Field methods and analyses of the butterfly surveys of the Aargau Biodiversity Monitoring Program.