**denselben: ''Crayfish in Austria, history and actual situation''. – In: Abraham, S. (Hrsg.), ''Freshwater crayfish. First international symposium on freshwater crayfish, Austria, 1972''. Studentlitteratur, Lund: 135–150. | **denselben: ''Crayfish in Austria, history and actual situation''. – In: Abraham, S. (Hrsg.), ''Freshwater crayfish. First international symposium on freshwater crayfish, Austria, 1972''. Studentlitteratur, Lund: 135–150. |