@article{EXMA_2002__11_2_53248,
     author = {Willerton, Simon},
     title = {On the first two {Vassiliev} invariants.},
     journal = {Experimental mathematics},
     pages = {289--296},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2002},
     zbl = {1116.57300},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2002__11_2_53248/}
}