Flick, M., and D. Kuchey. “ONTEST ORNER: he 2019 tate ournament of athematics (pp. 50--53)”. hio ournal of chool athematics, vol. 83, no. 1, Nov. 2019, http://voyager.janeway.systems:9999/index.php/OJSM/article/view/7137.