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    "van Hemmen, JL, Longtin, A, and Vollmayr, AN. Testing resonating vector",
    "    strength: Auditory system, electric fish, and noise.",
    "    Chaos 21, 047508 (2011);",
    "    :doi:`10.1063/1.3670512`.",
    "van Hemmen, JL.  Vector strength after Goldberg, Brown, and von Mises:",
    "    biological and mathematical perspectives.  Biol Cybern.",
    "    2013 Aug;107(4):385-96. :doi:`10.1007/s00422-013-0561-7`.",
    "van Hemmen, JL and Vollmayr, AN.  Resonating vector strength: what happens",
    "    when we vary the \"probing\" frequency while keeping the spike times",
    "    fixed.  Biol Cybern. 2013 Aug;107(4):491-94.",
    "    :doi:`10.1007/s00422-013-0560-8`."
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