Kim Han-Kyu, Choi Chang-Yong, Jeong Min-Su, Kang Hwa-Yeon, and Lee Woo-Shin. “Regurgitation of the Koilin Layer in Chinstrap Penguins (<em>Pygoscelis antarcticus</Em&gt;) and Its Association With Gastric Parasites”. Polar Research 350 (June 21, 2016). Accessed April 19, 2024. https://polarresearch.net/index.php/polar/article/view/3288.