@article{TIMM_2006_12_1_a13,
     author = {G. I. Marchuk},
     title = {Adjoint equations and their applications},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {184--195},
     year = {2006},
     volume = {12},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2006_12_1_a13/}
}