1.
Skjenneberg S. Lars Hällbom; Nitrogenase regulation and ultrastructure of heterocystous cyanobacteria; free living and in lichen symbiosis. Ran [Internet]. 1982 May 1 [cited 2024 Nov. 22];2(1):52. Available from: https://septentrio.uit.no/index.php/rangifer/article/view/431