1. Agroclimatic Handbook of Kaliningrad Oblast (Gidrometeoizdat, Leningrad, 1961) [in Russian].
2. O. A. Antsiferova, “Water regime of soils in Kaliningrad oblast,” Izv. Kaliningrad. Gos. Tekh. Univ., No. 53, 11–24 (2019).
3. O. A. Antsiferova, Soils of Sambia Peninsula and Their Anthropogenic Transformation, Part 1: Pedogenic Factors. Podzolic and Brown Soils (Kaliningrad, 2008) [in Russian].
4. G. N. Barinova, Climate of Kaliningrad Oblast (Kaliningrad, 2002) [in Russian].
5. A. F. Bol’shakov, Water Regime of Deep Chernozems of the Central Russian Upland (Academy of Sciences of the USSR, Moscow, 1961) [in Russian].