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Bächler, Erich; Hahn, Steffen; Schaub, Michael; Arlettaz, Raphaël; Jenni, Lukas; Fox, James W.; Afanasyev, Vsevolod; Liechti, Felix (2010). Year-Round Tracking of Small Trans-Saharan Migrants Using Light-Level Geolocators. PLoS ONE, 5(3), e9566. Lawrence, Kans.: Public Library of Science 10.1371/journal.pone.0009566
Bächler, Erich; Schaub, Michael (2007). The effects of permanent local emigration and encounter technique on stopover duration estimates as revealed by telemetry and mark-recapture. Condor, 109(1), pp. 142-154. Washington, D.C.: Cooper Ornithological Club 10.1650/0010-5422(2007)109[142:TEOPLE]2.0.CO;2
