- 1128/MMBR.64.1.69-114.2000. PMC 98987. PMID 10704475.
Bergh O, Børsheim KY,
Bratbak G,
Heldal M (August 1989). "High
abundance of
viruses found in aquatic...
- mimiviridae. Sandaa, Ruth-Anne; Heldal, Mikal; Castberg, Tonje; Thyrhaug, Runar;
Bratbak,
Gunnar (November 2001). "Isolation and
Characterization of Two Viruses...
- 2..638M. doi:10.1111/j.1747-6593.1988.tb01352.x.
Bergh O, Børsheim KY,
Bratbak G,
Heldal M (August 1989). "High
abundance of
viruses found in aquatic...
- 1038/nature04160. PMID 16163346. S2CID 4370363.
Bergh O, Børsheim KY,
Bratbak G,
Heldal M (August 1989). "High
abundance of
viruses found in aquatic...
-
Kristian (2005). "Kampen om flagget". In
Levende Historie No. 1, pp. 12–14.
Bratbak, Bjørn (1993). "Det norsk-svenske unionsvåpenet og
andre symbolstridigheter"...
-
gjennem tidene". Kristiania: P.T.
Mallings Boghandels forlag, pp. 11–12.
Bratbak, Bjørn (1993). "Det norsk-svenske unionsvåpenet og
andre symbolstridigheter"...
- 3390/v9100302. PMC 5691653. PMID 29057790. Bergh, Øivind; Børsheim, Knut Yngve;
Bratbak, Gunnar; Heldal,
Mikal (1989). "High
abundance of
viruses found in aquatic...
- (3): 252–265. doi:10.1111/oik.01549. Bergh, Øivind; Børsheim, Knut Yngve;
Bratbak, Gunnar; Heldal,
Mikal (August 1989). "High
abundance of
viruses found...
- 1038/nature04160. PMID 16163346. S2CID 4370363.
Bergh O, Børsheim KY,
Bratbak G,
Heldal M (1989). "High
abundance of
viruses found in
aquatic environments"...
- He is also a
member of the
Norwegian Academy of
Science and Letters.
Bratbak, Gunnar;
Mikal Heldal;
Svein Norland; T.
Frede Thingstad (1990). "Viruses...
