@article{01310581,
title = {Computing immersed normal surfaces in the figure-eight knot complement.},
journal = {Experimental Mathematics},
volume = {8},
year = {1999},
pages = {73-84},
doi = {10.1080/10586458.1999.10504390},
zbl = {0927.57020},
language = {en},
url = {http://dml.mathdoc.fr/item/01310581}
}
Rannard, Richard. Computing immersed normal surfaces in the figure-eight knot complement.. Experimental Mathematics, Tome 8 (1999) pp. 73-84. doi : 10.1080/10586458.1999.10504390. http://gdmltest.u-ga.fr/item/01310581/