1. Atlas “Geologiya i neftegazonosnost’ Khanty-Mansiiskogo avtonomnogo okruga” (Atlas of the Geology and Petroleum Potential of the Khanty-Mansi Autonomous District), Akhpatelov, E.A., Volkov, V.A, Goncharova, V.N., Eliseev, V.G., Karasev, V.I., Mukher, A.G., Myasnikova, G.P., Teplyakov, E.A., Khafizov, F.Z., Shpil’man, A.V., and Yuzhakova, V.M., Eds., Yekaterinburg: ”IzdatNaukaServis,” 2004.
2. Balin-ski, A., Evolution on the embryonic development in lingulid brachiopods, Acta Palaeontol. Pol., 1997, vol. 42,no. 1, pp. 45–56.
3. Balthasar, U., The brachiopod Eoobolus from the Early Cambrian Mural Formation (Canadian Rocky Mountains), Paläontol. Z., 2009, vol. 83,no. 3, pp. 407–418.
4. Bitner, M.A. and Pisera, A., Brachiopods from the Upper Cretaceous chalk of Mielnik (Eastern Poland), Acta Geol. Pol., 1979, vol. 29,no. 1, pp. 67–88.
5. Chuang, S.H., Statistical study of variations in the shell of Lingula unguis (L.), Vidensk. Medd. Dansk. Naturhist. Foren., 1962, vol. 124, pp. 199–215.