@article{journal,
author = {Zuberogoitia, I. and Zabala, J. and Mart{\'i}nez, J. E.},
title = {Bias in little owl population estimates using playback techniques during surveys},
year = {2011},
volume = {34.2},
pages = {395--400},
journal = {Animal Biodiversity and Conservation},
keywords = {Little owl, Survey methods, Presence Program, Detection efficiency, Vocal activity}
}