1. Aristarkhova, L.B. and Turikeshev, G.T., Reconstructions of drainage network evolution at the Caspian Lowland during late Pleistocene, Geomorfologiya, 1983, no. 4, pp. 62–67.
2. Arslanov, Kh.A., Yanina, T.A., Chepalyga, A.L., Svitoch, A.A., Makshaev, R.R., Maksimov, F.E., Chernov, S.B., Tertychniy, N.I., and Starikova, A.A., On the age of the khvalynian deposits of the Caspian Sea coasts according to 14C and 230Th/234U methods, Quaternary International, 2016, vol. 409, pp. 81–87.
3. Badyukova, E.N., Origin of chocolaтe clays (Pleistocene) of Northern Peri-Caspian, Byull. Mosk. O-va. Ispyt. Prir.,
Otd. Geol., 2000a, vol. 75, no. 5, pp. 25–31.
4. Badyukova, E.N., The origin of the “embedded” or blind deltas in the Volga-Ural interfluve in the lightof the new concept of the history of the Caspian Sea level fluctuations, Geomorfologiya, 2000b, no. 3, pp. 72–83.
5. Badyukova, E.N., Genesis of the baer knolls developed in the Northern Caspian Plain, Quaternary International, 2018, vol. 465, pp. 11–21.