@article{MS2_1995__77_2_167366,
     author = {F.F. Knudsen and K. Seip and A.M. Ulanovskii},
     title = {A {Best} {Covering} {Problem.}},
     journal = {Mathematica Scandinavica},
     pages = {272--280},
     publisher = {mathdoc},
     volume = {77},
     number = {2},
     year = {1995},
     zbl = {0868.46020},
     url = {http://geodesic.mathdoc.fr/item/MS2_1995__77_2_167366/}
}