1. N. P. Bityutskii, Microelements Essential for Plants (DEAN, St. Petersburg, 2005) [in Russian].
2. Yu. N. Vodyanitskii and S. A. Shoba, “Biogeochemistry of iron in overmoistened soils: a review,” Pochvovedenie, No. 9, 1047–1059 (2013). doi 10.7868/S0032180X13090128
3. Vl. V. Kuznetsov and G. A. Dmitrieva, The Plant Physiology (Vysshaya Shkola, Moscow, 2006) [in Russian].
4. V. G. Mineev, Agrochemistry (Moscow State Univ., Moscow, 1990) [in Russian].
5. L. K. Ostrovskaya, Role of Iron in Flora and Carbonate Chlorosis (Naukova Dumka, Kiev, 1993) [in Russian].