1. Introduction to Partial Differential Equations;Folland,1995
2. Linear Integral Equations;Kress,1999
3. V. Maz’ya, A new approximation method and its applications to the calculation of volume potentials, boundary point method. in: 3. DFG-Kolloquium des DFG-Forschungsschwerpunktes Randelementmethoden, 30.09.1991–05.10.1991.
4. On approximate approximations using Gaussian Kernels;Maz’ya;IMA J. Num. Anal.,1996
5. V. Maz’ya, G. Schmidt, Approximate Approximations, Mathematical Surveys and Monographs, vol. 141, AMS, 2007.