@article{05117809,
title = {On converses of Napoleon's theorem and a modified shape function.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {47},
year = {2006},
pages = {363-383},
zbl = {1116.51013},
language = {en},
url = {http://dml.mathdoc.fr/item/05117809}
}
Hajja, Mowaffaq; Martini, Horst; Spirova, Margarita. On converses of Napoleon's theorem and a modified shape function.. Beiträge zur Algebra und Geometrie, Tome 47 (2006) pp. 363-383. http://gdmltest.u-ga.fr/item/05117809/