Structural adaptations of the eggs and the fetal membranes of monotremes and marsupials for respiration and metabolic exchange

Hughes, R. L. (1984). Structural adaptations of the eggs and the fetal membranes of monotremes and marsupials for respiration and metabolic exchange. In Respiration and metabolism of embryonic vertebrates (pp. 389–421). Springer Netherlands. https://doi.org/10.1007/978-94-009-6536-2_28