@article{EP_2008_24_a6,
     author = {Ibrahim Cheddadi and Radek Fu\v{c}{\'\i}k and Mariana I. Prieto and Martin Vohral{\'\i}k},
     title = {Computable a posteriori error estimates in the finite element method based on its local conservativity: improvements using local minimization},
     journal = {ESAIM. Proceedings},
     pages = {77--96},
     publisher = {mathdoc},
     volume = {24},
     year = {2008},
     doi = {10.1051/proc:2008031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:2008031/}
}