REFERENCES
- P. Doktor ( 1973 ). On the density of smooth functions in certain subspaces of Sobolev space . Com. Math. Univ. Carolinae 14 : 609 – 622 .
- M. Feistauer and A. Ženíšek ( 1987 ). Finite element solution of nonlinear elliptic problems . Numer. Math. 50 : 451 – 475 . [CSA] [CROSSREF]
- M. Krízek ( 1991 ). On semiregular families of triangulations and linear interpolation . Appl. Math. 36 : 223 – 232 . [CSA]
- A. Kufner ( 1986 ). Boundary value problems in weighted spaces . In: J. Vosmanský , M. Zlámal , eds. Proceedings of the International Conference on Differential Equations and their Applications . Berlin : Springer-Verlag pp. 35 – 48 .
- A. Kufner , O. John , and S. Fučík . ( 1977 ). Function Spaces . Prague : Academia .
- J. Nečas ( 1967 ). Les Méthodes Directes en Théorie des Equations Elliptiques . Prague : Academia .
- J. L. Synge ( 1957 ). The Hypercircle in Mathematical Physics . Cambridge : Cambridge University Press .
- A. Ženíšek (1990). Nonlinear Elliptic and Evolution Problems and Their Finite Element Approximations . London : Academic Press.
- A. Ženíšek ( 1993 ). Variational problems in domains with cusp-points . Appl. Math. 38 : 381 – 403 . [CSA]
- A. Ženíšek ( 1999 ). Surface integral and Gauss-Ostrogradskij theorem from the viewpoint of applications . Appl. Math. 44 : 169 – 241 . [CSA] [CROSSREF]
- A. Ženíšek ( 2003 ). On a generalization of Nikolskij's extension theorem in the case of two variables . Appl. Math. 48 : 367 – 404 . [CSA] [CROSSREF]