@article{DAN_1963_150_1_a3,
     author = {V. N. Kalinin},
     title = {On the existence of an absolute minimum in a problem in the theory of optimal processes},
     journal = {Doklady Akademii Nauk},
     pages = {21--22},
     publisher = {mathdoc},
     volume = {150},
     number = {1},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_1_a3/}
}