@article{05191880,
title = {Extremal properties of logarithmic spirals.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {48},
year = {2007},
pages = {493-520},
zbl = {1159.53002},
language = {en},
url = {http://dml.mathdoc.fr/item/05191880}
}
Bolt, Michael. Extremal properties of logarithmic spirals.. Beiträge zur Algebra und Geometrie, Tome 48 (2007) pp. 493-520. http://gdmltest.u-ga.fr/item/05191880/