Edmunds, David E.: Recent developments concerning entropy and approximation numbers.
(English).
In:
Krbec, Miroslav, Kufner, Alois, Opic, Bohumír
and Rákosník, Jiří (eds.): Nonlinear Analysis, Function Spaces and Applications, Proceedings of the Spring School held in Prague, May 23-28, 1994.
Vol. 5.
Prometheus Publishing House, Praha, 1994.
pp. 33-76
Edmunds, David E.: Embeddings of Sobolev spaces.
(English).
In:
Fučík, Svatopluk
and Kufner, Alois (eds.): Nonlinear Analysis, Function Spaces and Applications, Proceedings of a Spring School held in Horní Bradlo, 1978.
[Vol 1].
BSB B. G. Teubner Verlagsgesellschaft, Leipzig, 1979.
pp. 38-58
