Quinn, J L, L Still, M C Carrier, J S Kirby, and P Lambdon. “Scaup Aythya Marila Numbers and the Cockle Cardium Edule Fishery on the Solway Firth: Are They Related?”. Wildfowl (January 1, 1996): 187–194. Accessed December 16, 2025. https://tidsskrift.dk/Wildfowl/article/view/154634.