Bregman, M. R., J. R. Iversen, D. Lichman, M. Reinhart, and A. D. Patel. “A Method for Testing Synchronization to a Musical Beat in Domestic Horses (Equus Ferus Caballus)”. Empirical Musicology Review, vol. 7, no. 3-4, June 2013, pp. 144-56, https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/EMR/article/view/3745.