@article{DAN_1969_186_6_a5,
     author = {M. A. Kronrod},
     title = {An optimal ordering algorithm without a field of operation},
     journal = {Doklady Akademii Nauk},
     pages = {1256--1258},
     publisher = {mathdoc},
     volume = {186},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_6_a5/}
}