Janse, M., Zimmerman, B., Geerlings, L., Brown, C., & Nagelkerke, L. A. (2017). Sustainable species management of the elasmobranch populations within European aquariums: a conservation challenge. Journal of Zoo and Aquarium Research, 5(4), 172–181. https://doi.org/10.19227/jzar.v5i4.313