1. Limnological studies of Lake Norrviken, an eutrophicated Swedish lake;Ahlgren;Schweiz. Z. Hydrol.,1967
2. Role of sediments in the process of recovery of a eutrophicated lake;Ahlgren,1977
3. Restaurering av sjöar med kulturbetingat hypolimniskt syrgasdeficit;Bengtsson,1972
4. Beschaffenheitsänderungen des Sestons in Seen nach dem Sedimentieren;Bengtsson;Acta Hydrochim. Hydrobiol.,1977
5. A new geochemical classification of sedimentary environments;Berner;J. sedim. Petrol.,1981