Template:Nikitenko & Yadrenkin, 1998
- Nikitenko, B.L. & Yadrenkin, A.V. 1998. Представители рода Grigelis (Nodosariidae, Foraminifera) из нижнего мезозоя севера Сибири [Representatives of the genus Grigelis (Nodosariidae, Foraminifera) from the Lower Mesozoic of the north of Siberia]. Novosti Paleontologii i Stratigrafii 1: 103–112. (Russian)