@article{SJVM_2008_11_1_a5,
     author = {E. A. Kotel'nikov},
     title = {Non-convex quadratic optimization on a~parallelepiped},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {69--81},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2008_11_1_a5/}
}