1. Karapetiants N. and Samko S., Equations with Involutive Operators, Birkhäuser, Boston, Basel, and Berlin (2001).
2. Avsyankin O. G. and Karapetyants N. K., “On the pseudospectra of multidimensional integral operators with homogeneous kernels of degree -n,” Siberian Math. J., 44, No. 6, 935–950 (2003).
3. Avsyankin O. G., “On the C*-algebra generated by multidimensional integral operators with homogeneous kernels and multiplicative translations,” Dokl. Math., 77, No. 2, 298–299 (2008).
4. Avsyankin O. G., “The spectra and singular values of multidimensional integral operators with bihomogeneous kernels,” Siberian Math. J., 49, No. 3, 389–394 (2008).
5. Avsyankin O. G. and Peretyat’kin F. G., “Boundedness and compactness of multidimensional integral operators with homogeneous kernels,” Russian Math. (Iz. VUZ), No. 11, 57–60 (2013).