1. Water quality criteria for freshwater fish;Alabaster,1982
2. Contemporary changes in Portuguese freshwater fish fauna and conservation of autochthonous Cyprinidae;Almaca;Roczniki Nauk Rolniczych,1983
3. Checklist of the fish and invertebrates listed in the CITES appendices;Almada-Villela,1988
4. Lake Trummen restoration project;Andersson;Verh. Int. Ver. Theoret. angew. Limnol.,1975
5. Swedish lake restoration programme gets results;Bjork;Ambio,1972