Comporek, Michał. “Comparative Analysis of the Application of Roychowdhury and Gunny Models in the Estimation of Real Earnings Management”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 4(988), Mar. 2021, pp. 45-65, https://doi.org/10.15678/ZNUEK.2020.0988.0403.