The solvability of elliptic problems in limiting regions
Tài liệu tham khảo
S. G. Krein, “The behavior of solutions of elliptic problems when the region is varied,” Studia Mathematica,31, 411–428 (1968).
Zh.-L. Lions and É. Madzhenes, Homogeneous Boundary Value Problems and Their Applications [Russian translation], Mir, Moscow (1971).
S. Agmon, A. Duglis, and L. Nirenberg, Bounds near the Boundary for the Solutions of Elliptic Partial Differential Equations for General Boundary Conditions [Russian translation], Vol. 1, IL, Moscow (1962).
V. M. Babich, “The problem of the extension of functions,” Uspekhi Matem. Nauk,8, No. 2 (1953).