@article{SJVM_2018_21_3_a6,
     author = {T. Hou},
     title = {Mixed methods for optimal control problems},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {333--343},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2018_21_3_a6/}
}