Richard J. T., Levine R., Romano T. A., and Sartini B. L. “Minimally Invasive Physiological Correlates of Social Behaviour in Belugas (<em>Delphinapterus leucas</Em&gt;) under Human Care”. Polar Research, vol. 40, no. S1, July 2021, doi:10.33265/polar.v40.5504.