Helm, Barbara Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Woog, F., Wink, M., Rastegar-Pouyani, E., Gonzalez, J., & Helm, B. (2008). Distinct taxonomic position of the Madagascar stonechat (Saxicola torquatus sibilla) revealed by nucleotide sequences of mitochondrial DNA. Journal of Ornithology, 149(3), 423-430. doi:10.1007/s10336-008-0290-1.