@article{AA_2001_13_3_a4,
     author = {C. Weber and A. Pajitnov and L. Rudolph},
     title = {Morse{\textendash}Novikov number of knots and links},
     journal = {Algebra i analiz},
     pages = {105--118},
     year = {2001},
     volume = {13},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2001_13_3_a4/}
}