Ottvall, Richard. “How Many Redshanks Tringa Totanus Breed on a Coastal meadow?—an Evaluation of a Breeding Survey Method”. Ornis Svecica 14, no. 4 (October 1, 2004): 182–185. Accessed May 23, 2022. https://journals.lub.lu.se/os/article/view/22763.