@article{VUU_2016_26_2_a11,
     author = {V. N. Ushakov and P. D. Lebedev},
     title = {Algorithms of optimal set covering on the planar $\mathbb{R}^2 $},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {258--270},
     year = {2016},
     volume = {26},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2016_26_2_a11/}
}