Mass mortality of adult Razorbills Alca torda in the Skagerrak and North Sea area, autumn 2007
Heubeck, M., Aarvak, T., Isaksen, K., Johnsen, A., Petersen, I.K., Anker-Nilssen, T. 2011. Mass mortality of adult Razorbills Alca torda in the Skagerrak and North Sea area, autumn 2007. Seabird 24: 11–32.