Köster, F. W., H.-H. Hinrichsen, D. Schnack, M. A. S. John, B. R. Mackenzie, J. Tomkiewicz, C. Möllmann, G. Kraus, M. Plikshs, A. Makarchouk, and E. Aro. “Recruitment of Baltic Cod and Sprat Stocks: Identification of Critical Life Stages and Incorporation of Environmental Variability into Stock-Recruitment Relationships”. Scientia Marina, vol. 67, no. S1, Apr. 2003, pp. 129-54, doi:10.3989/scimar.2003.67s1129.