Desportes, G., Kristensen, J. H., Benham, D., Wilson, S., Jepsen, T., Korsgaard, B., Siebert, U., Driver, J., Amundin, M., Hansen, K., & Shephard, G. (2003). Multiple insights into the reproductive function of harbour porpoises (<i>Phocoena phocoena</i>): An ongoing study. NAMMCO Scientific Publications, 5, 91-105. https://doi.org/10.7557/3.2741