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Sirenko, B.I., V.V. Petriashov, E. Rachor and K. Hinz (1995) Bottom biocoenoses of the Laptev Sea and
adjacent areas. In: Berichte zur Polarforshchung, 176, Kassens, H., D. Piepenburg, J. Thiede, 1. Timokhov,
H.W. Hubberten and S. Priamikov (eds.), Alfred Wegener Institute for Polar and Marine Research,
Bremenhaven, 21 1-221.
Systad, G.H. (1996) Effects of reduced day length on the activity pattern of wintering sea ducks. Cando Scient.
thesis, University of Tromso, Tromso, Norway.
Uspenskiy, S.M. (1969) Life in High Latitudes. Demonstrated mainly on birds (in Russian). Myisl', Moskva,
463pp.
Woakes, AJ. and PJ. Butler (1983) Swimming and diving in Tufted Ducks, Aythyafuligula, with particular
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195
Kendeigh, S.G., V.R. Dolnik and V.M. Gavrilov (1977) Avian energetics. Granivorous birds in ecosystems, 12,
127-204.
Sirenko, B.I., V.V. Petriashov, E. Rachor and K. Hinz (1995) Bottom biocoenoses of the Laptev Sea and
adjacent areas. In: Berichte zur Polarforshchung, 176, Kassens, H., D. Piepenburg, J. Thiede, 1. Timokhov,
H.W. Hubberten and S. Priamikov (eds.), Alfred Wegener Institute for Polar and Marine Research,
Bremenhaven, 21 1-221.
Systad, G.H. (1996) Effects of reduced day length on the activity pattern of wintering sea ducks. Cando Scient.
thesis, University of Tromso, Tromso, Norway.
Uspenskiy, S.M. (1969) Life in High Latitudes. Demonstrated mainly on birds (in Russian). Myisl', Moskva,
463pp.
Woakes, AJ. and PJ. Butler (1983) Swimming and diving in Tufted Ducks, Aythyafuligula, with particular
reference to heat rate and gas exchange. J. expo BioI., 107,311-329.