@article{ZNSL_2009_370_a5,
     author = {D. Pauly and S. Repin},
     title = {Two-sided a~posteriori error bounds for electro-magneto static problems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {94--110},
     publisher = {mathdoc},
     volume = {370},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_370_a5/}
}