@article{TM_1999_226_a18,
     author = {A. J. Niemi},
     title = {Interacting {Knots}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {232--239},
     year = {1999},
     volume = {226},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1999_226_a18/}
}