by D. Boffi, D. Gallistl, F. Gardini and L. Gastaldi
Reference:
D. Boffi, D. Gallistl, F. Gardini and L. Gastaldi:Optimal convergence of adaptive FEM for eigenvalue clusters in mixed form, Math. Comp., volume 86, no.307, pp.2213–2237, 2017.
Bibtex Entry:
@ARTICLE{bggg2017,
author = {D. Boffi and D. Gallistl and F. Gardini and L. Gastaldi},
title = {Optimal convergence of adaptive {FEM} for eigenvalue clusters in mixed form},
journal = {Math. Comp.},
fjournal = {Mathematics of Computation},
volume = {86},
number = {307},
pages = {2213--2237},
year = {2017},
doi = {10.1090/mcom/3212},
}