1. Alsterberg, G.: Wichtige Züge in der Biologie der Süß-wassergastropoden, 130 pp. Lund: Gleerup 1930.
2. Biodynamica;T. Brand von,1946
3. Brongersma-Sanders, M.: The importance of upwelling water to vertebrate paleontology and oil geology. Afd. Nat. Verh. K. ned. Akad. Wet. Afd. Nat. (Ser. 2) 45, (4), 1?112 (1948).
4. ?: Mass mortality in the sea. In: Treatise on marine ecology and paleoecology. Vol. 1. Ecology, pp 941?1010. Ed. by J. W. Hedgeth. Baltimore: Waverly Press 1957.
5. Caspers, H.: Black Sea and Sea of Azow. In: Treatise on marine ecology and paleoecology. Vol. 1. Ecology, pp 801?890. Ed. by J. W. Hedgpeth. Baltimore: Waverly Press 1957.