Convex surfaces with a quasiconformal spherical mapping
Tài liệu tham khảo
V. F. Kagan, Foundations of the Theory of Surfaces, part I, [in Russian], OGIZ, Moscow-Leningrad (1947).
F. W. Gehring, Quasiconformal Mappings in Space, Bull. Amer. Math. Soc.,69, No. 2, 146–164 (1963).
S. L. Sobolev, Some Applications of Functional Analysis in Mathematical Physics, [in Russian], Leningrad, Izdatel'stvo LGU (1950).