@article{VMP_2014_15_2_a14,
     author = {A. B. Bakushinskii and A. S. Leonov},
     title = {New a posteriori error estimates for approximate solutions to iregular operator equations},
     journal = {Numerical methods and programming},
     pages = {359--369},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2014_15_2_a14/}
}