Literature references

2 literature references:

Author: Blanc, M., J.-L. Gaudet, P. Banarescu and J.-C. Hureau
Year: 1971
Title: European inland water fish. A multilingual catalogue.
Source: Fishing News (Books) Ltd., London.
Author: Ojaveer, E., E. Pihu and T. Saat
Year: 2003
Title: Fishes of Estonia.
Source: Estonian Academy Publishers, Tallinn. 416 p.