@article{IIMI_2012_39_1_a68,
     author = {D. V. Khlopin},
     title = {On necessary conditions of optimality for infinite horizon problems},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {143--144},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2012_39_1_a68/}
}