@article{MZM_2013_94_1_a2,
     author = {A. V. Arutyunov},
     title = {Properties of the {Minimum} {Function} in the {Quadratic} {Problem}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {36--45},
     publisher = {mathdoc},
     volume = {94},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_94_1_a2/}
}