Strode G, Morgan JD, Thornton B, Mesev V, Rau E, Shortes S, Johnson N. Operationalizing Trumbo’s Principles of Bivariate Choropleth Map Design. CP [Internet]. 2020 Jan. 11 [cited 2024 Nov. 23];(94):5-24. Available from: https://cartographicperspectives.org/index.php/journal/article/view/1538