@article{01244254,
title = {A stability theorem for the area sum of a convex polygon and its polar reciprocal.},
journal = {Mathematica Pannonica},
volume = {9},
year = {1998},
pages = {3-15},
zbl = {0913.52002},
language = {en},
url = {http://dml.mathdoc.fr/item/01244254}
}
Florian, August. A stability theorem for the area sum of a convex polygon and its polar reciprocal.. Mathematica Pannonica, Tome 9 (1998) pp. 3-15. http://gdmltest.u-ga.fr/item/01244254/