On the Double Tangents of Plane Closed Curves.
Fabricius-Bjerre, Fr.
Mathematica Scandinavica, Tome 11 (1962), p. 113-116 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1962-01-01
EUDML-ID : urn:eudml:doc:165818 
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     title = {On the Double Tangents of Plane Closed Curves.},
     journal = {Mathematica Scandinavica},
     volume = {11},
     year = {1962},
     pages = {113-116},
     zbl = {0173.50501},
     url = {http://dml.mathdoc.fr/item/GDZPPN002347024}
}

Fabricius-Bjerre, Fr. On the Double Tangents of Plane Closed Curves.. Mathematica Scandinavica, Tome 11 (1962) pp. 113-116. http://gdmltest.u-ga.fr/item/GDZPPN002347024/