@article{DA_1987_27_a4,
     author = {A. I. Erzin},
     title = {The problem of constructing a spanning tree of maximal weight with a bounded radius},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {70--78},
     publisher = {mathdoc},
     number = {27},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1987_27_a4/}
}