Petzold, J. ., & Smith, G. . (2016). Androgens regulate sex differences in signaling but are not associated with male variation in morphology in the weakly electric fish Parapteronotus hasemani. Hormones and Behavior, 78, 67-71. https://doi.org/10.1016/j.yhbeh.2015.10.014

Petzold, J. ., Marsat, G. ., & Smith, G. . (2016). Co-adaptation of electric organ discharges and chirps in South American ghost knifefishes (Apteronotidae). Journal of Physiology, Paris, 110(3 Pt B), 200-215. https://doi.org/10.1016/j.jphysparis.2016.10.005

Petzold, J. ., Alves-Gomes, J. ., & Smith, G. . (2018). Chirping and asymmetric jamming avoidance responses in the electric fish <i>Distocyclus conirostris</i>. The Journal of Experimental Biology, 221(Pt 17). https://doi.org/10.1242/jeb.178913 (Original work published 2018)