@article{DAN_1996_347_4_a1,
     author = {A. F. Gorshkov and Yu. M. Solomentsev},
     title = {Finding extremal spanning trees with prescribed vertex degrees by},
     journal = {Doklady Akademii Nauk},
     pages = {443--445},
     publisher = {mathdoc},
     volume = {347},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_347_4_a1/}
}