@article{CRMATH_2013__351_1-2_77_0,
     author = {Alexandre Ern and Martin Vohral{\'\i}k},
     title = {Four closely related equilibrated flux reconstructions for nonconforming finite elements},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {77--80},
     publisher = {Elsevier},
     volume = {351},
     number = {1-2},
     year = {2013},
     doi = {10.1016/j.crma.2013.01.001},
     language = {en},
}