J. A. Grzesik. Yet Another Analytic Proof of Napoleon's Theorem. The American Mathematical Monthly, 123(8):824, 2016. [doi]
@article{Grzesik16,
title = {Yet Another Analytic Proof of Napoleon's Theorem},
author = {J. A. Grzesik},
year = {2016},
url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.123.08.824},
researchr = {https://researchr.org/publication/Grzesik16},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {123},
number = {8},
pages = {824},
}