@article{TRSPY_1994_203_a12,
     author = {G. I. Marchuk},
     title = {On some approaches to the construction of adjoint operators in nonlinear problems},
     journal = {Informatics and Automation},
     pages = {126--134},
     publisher = {mathdoc},
     volume = {203},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1994_203_a12/}
}