Nakrem Hans A., Nilsson Inger, and Simonsen Bjørn T. 1991. “Moscovian (Carboniferous) Microfossils (Bryozoa, Conodonta, and Fusulinida) from Novaya Zemlya, Arctic U.S.S.R.”. Polar Research 9 (1):45-64. https://doi.org/10.3402/polar.v9i1.6778.