TY JOUR TI DETERMINATION OF BIFURCATION POINTS IN THE FUNCTIONING OF “SOIL-PLANT–AIR” SYSTEM KW bifurcation KW bifurcation points KW plant growth JO Vestnik of Kazan State Agrarian University AU Maksimov, I.I. AU Kalimullin, M.N. AU Alekseev, E.P. AU Vasiliev, A.A. AU Maksimov, N.V. PY 2023 IS 18 PB Kazan state agrarian University