@article{MZM_1974_16_6_a0,
     author = {V. I. Andreev},
     title = {The existence of discontinuous metric projections},
     journal = {Matemati\v{c}eskie zametki},
     pages = {857--864},
     publisher = {mathdoc},
     volume = {16},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_6_a0/}
}