Leibrecht, Markus. “Zur Präzision Der Steuerprognose in Österreich”. Austrian Journal of Statistics 33, no. 3 (April 3, 2016): 315–326. Accessed January 31, 2023. https://www.ajs.or.at/index.php/ajs/article/view/vol33%2C%20no3%20-%205.