@article{DM_2000_12_3_a4,
     author = {I. D. Kan},
     title = {Refining of the comparison rule for continuants},
     journal = {Diskretnaya Matematika},
     pages = {72--75},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2000_12_3_a4/}
}