@article{ZNSL_1997_249_a11,
     author = {S. I. Repin},
     title = {A~posteriori error estimates for approximate solutions of variational problems with power growtn functionals},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {244--255},
     publisher = {mathdoc},
     volume = {249},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_249_a11/}
}