On the self crossing six sided figure problem.
Katz, Nets Hawk
The New York Journal of Mathematics [electronic only], Tome 5 (1999), p. 121-130 / Harvested from The Electronic Library of Mathematics
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Publié le : 1999-01-01
EUDML-ID : urn:eudml:doc:120409 
@article{01348673,
     title = {On the self crossing six sided figure problem.},
     journal = {The New York Journal of Mathematics [electronic only]},
     volume = {5},
     year = {1999},
     pages = {121-130},
     zbl = {0940.42010},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01348673}
}

Katz, Nets Hawk. On the self crossing six sided figure problem.. The New York Journal of Mathematics [electronic only], Tome 5 (1999) pp. 121-130. http://gdmltest.u-ga.fr/item/01348673/