Points of infinitely many normals to convex surfaces.
Journal für die reine und angewandte Mathematik, Tome 350 (1984), pp. 183-187
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Tudor Zamfirescu. Points of infinitely many normals to convex surfaces.. Journal für die reine und angewandte Mathematik, Tome 350 (1984), pp. 183-187. http://geodesic.mathdoc.fr/item/JRAM_1984__350_152640/
@article{JRAM_1984__350_152640,
author = {Tudor Zamfirescu},
title = {Points of infinitely many normals to convex surfaces.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
pages = {183--187},
year = {1984},
volume = {350},
zbl = {0557.52004},
url = {http://geodesic.mathdoc.fr/item/JRAM_1984__350_152640/}
}