@article{TIMM_2011_17_2_a12,
     author = {G. I. Marchuk and V. P. Shutyaev},
     title = {Adjoint equations and iterative algorithms in problems of variational data assimilation},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {136--150},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_2_a12/}
}