Semiregular Polygons. - Oleg Mushkarov; Nikolai Nikolov (Am. Math. Mon., 2006)

Correction to "Napoleon Polygons". - Titu Andreescu; Vladimir Georgiev; Oleg Mushkarov (Am. Math. Mon., 2015)

Napoleon Polygons. - Titu Andreescu; Vladimir Georgiev; Oleg Mushkarov (Am. Math. Mon., 2015)

Quadratic Forms, Chebyshev Polynomials, and Geometric Inequalities. - Titu Andreescu; Oleg Mushkarov (Am. Math. Mon., 2018)