@article{VMP_2020_21_2_a5,
     author = {A. V. Likhachev},
     title = {Allocation of three brightness levels on a noisy image},
     journal = {Numerical methods and programming},
     pages = {180--186},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2020_21_2_a5/}
}