O. B. Akanbi, “Fatal multiple intestinal intussusceptions and torsion secondary to a non-degradable foreign body gastrointestinal obstruction in a captive Lion (Panthera leo)”, Brazilian Journal of Veterinary Pathology, vol. 13, no. 3, pp. 609–614, Nov. 2020, doi: 10.24070/bjvp.1983-0246.v13i3p609-614.