"* Polynyas in the Chukchi Sea: [http://pubs.aina.ucalgary.ca/arctic/Arctic44-S-164.pdf]* Polar bear protection in the Chukchi Sea: Polar bears shared by US, Russia to be managed jointly* Vinogradov V.A., Gusev E.A., Lopatin B.G.
"* Polynyas in the Chukchi Sea: [http://pubs.aina.ucalgary.ca/arctic/Arctic44-S-164.pdf]* Polar bear protection in the Chukchi Sea: Polar bears shared by US, Russia to be managed jointly* Vinogradov V.A., Gusev E.A., Lopatin B.G.