Dear Researchers can anyone upload these books in his ResearchGate:
1) Rüdiger Verfürth : A Review of a Posteriori Error Estimation and
Adaptive Mesh-refinement Techniques.
Wiley-Teubner, 1 janv. 1996 - 127 pages.
2) Rüdiger Verfürth : A Posteriori Error Estimation Techniques for
Finite Element Methods
Oxford University Press, 18 avr. 2013 - 393 pages.