Utting J. Palynostratigraphy of Permian and Lower Triassic rocks,Sverdrup Basin,Canadian Arctic archipelago / J.Utting, 1994. - 107 p. - Текст : непосредственный.
Thermal maturity of carboniferous and permian rocks of the sverdrup basin, Canadian arctic archipelago / J.Utting,F.Goodarzi,B.J.Dougherty,C.M.Henderson, 1989. - 20 p. - Текст : непосредственный.