@article{DAN_1970_194_3_a0,
     author = {V. L. Arlazarov and Y. A. Dinitz and M. A. Kronrod and I. A. Faradzhev},
     title = {On economical construction of the transitive closure of an oriented graph},
     journal = {Doklady Akademii Nauk},
     pages = {487--488},
     publisher = {mathdoc},
     volume = {194},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a0/}
}