Cocks M. P., Harris J. M., Steele W. K., & Balfour D. A. (1999). The influence of ornithogenic products on the nutrient status of soils surrounding nests on nunataks in Dronning Maud Land, Antarctica. Polar Research, 18(1), 19-26. https://doi.org/10.3402/polar.v18i1.6555