«County-scale mapping of the invasion stage and invasiveness of major nonnative invasive plants in the Upper Midwest forestlands, USA», Math. Comput. For. Nat. Res. Sci., т. 10, вып. 2, сс. 68–79(12), окт. 2018, просмотрено: июл. 12, 2026. доступно на: https://tmp.mcfns.com/index.php/Journal/article/view/10.13