Kim , H.-K., Choi , C.-Y., Jeong , M.-S., Kang , H.-Y. and Lee , W.-S. (2016) “Regurgitation of the koilin layer in chinstrap penguins (<em>Pygoscelis antarcticus</em&gt;) and its association with gastric parasites”, Polar Research, 350. doi: 10.3402/polar.v35.25966.