[1]
Hasselquist, D., Bensch, S. and Ottosson, U. 1993. Diurnal song pattern in the Great Reed Warbler Acrocephalus arundinaceus. Ornis Svecica. 3, 3–4 (Oct. 1993), 125–136. DOI:https://doi.org/10.34080/os.v3.23037.