Baumgartner MF, Van Parijs SM, Wenzel FM 2008 Low frequency vocalizations produced by sei whales (Balaenoptera borealis) J Acoust Soc Am 124(2): 1339-1349 https://doi.org/10.1121/1.2945155 Van Parijs Sofie M Wenzel Frederick W Division Resource Evaluation & Assessment READ Protected Species Acoustics Primary Journal Article Primary publication