@article{MZM_2005_77_2_a1,
     author = {A. I. Gerko},
     title = {Consistent solutions of linear equations in variational derivatives},
     journal = {Matemati\v{c}eskie zametki},
     pages = {176--187},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2005_77_2_a1/}
}