Dobrowolska, B. „PANEL MODELS AS A TOOL FOR INVESTIGATING THE EFFECTS OF CONSUMPTION VAT IN POLAND IN THE YEARS 1995-2011”. Metody Ilościowe W Badaniach Ekonomicznych, t. 14, nr 1, kwiecień 2013, s. 84-92, https://qme.sggw.edu.pl/article/view/3578.