1. Ivochkina, N.M.: The integral method of barrier functions and the Dirichlet problem for equations with operators of Monge–Ampère type. Mat. Sb. 112(154), 193–206 (1980). English transl. in Math. USSR Sb. 40 (1981)
2. Ivochkina, N.M.: Second order equations with d-elliptic operators. Trudy Mat. Inst. Steclov. 147, 45–56 (1980). English transl. in Proc. Steclov Inst Math., no. 2 (1981)
3. Ivochkina, N.M.: A description of the stability cones generated by differential operators of Monge–Ampère type. Math. USSR Sb. 122(164), 265–275 (1983). English transl. in Math. USSR Sb. 50 (1985)
4. Ivochkina, N.M.: Description of cones of stability generated by differential operators of Monge–Ampère type. Math. USSR Sb. 50, 259–268 (1985). English transl
5. Ivochkina, N.M.: On the possibility of integral formulae in R$$^{\mathit{n}}$$. Zap. Nauchn. Semin. LOMI 52, 35–51 (1975)