Klekowski , Romuald Z., and Krzysztof W. Opaliński. “Matter and Energy Flow in Spitsbergen Ornithogenic Tundra”. Polar Research 4, no. 2 (January 12, 1986): 187-197. Accessed March 29, 2026. https://polarresearch.net/index.php/polar/article/view/2503.