@article{MZM_1974_15_4_a10,
     author = {A. F. Shapkin},
     title = {Methods of solving {Fredholm} equations optimal on classes of functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {595--602},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_4_a10/}
}