1. On the Oscillation of Solutions of the Equation y (n) + p(x)y = 0, Trudy Mosk. Mat. Obshch., 1961, vol. 10, pp. 419–436.
2. On the Solvability of the First Boundary Value Problem for Elliptic Equations, Dokl. Akad. Nauk SSSR, 1961, vol. 136, no.4, pp. 771–774.
3. Boundary Value Problems for Elliptic Equations in Conical Domains, Dokl. Akad. Nauk SSSR, 1963, vol. 153, no.1, pp. 27–29.
4. Boundary Value Problems for Parabolic Equations in Closed Domains, Trudy Mosk. Mat. Obshch., 1966, vol. 15, pp. 400–451.
5. Boundary Value Problems for Elliptic Equations in Domains with Conical or Corner Points, Trudy Mosk. Mat. Obshch., 1967, vol. 16, pp. 209–292.