@Article{ authors = " Mariusz Próchniak, Bartosz Witkowski", title = "On the Use of Panel Stationarity Tests in Convergence Analysis : Empirical Evidence for the EU Countries", journal = "Equilibrium. Quarterly Journal of Economics and Economic Policy", issue = "2016 / Tom 11 / Numer 1", pages = "77 - 96" }

@Article{ authors = " Małgorzata Iwanicz-Drozdowska, Bartosz Witkowski", title = "Determinants of Banks’ Performance: the Case of ROE Of G-SIBs in Central, Eastern and South-Eastern Europe", journal = "Journal of Management and Business Administration. Central Europe", issue = "2016 / Tom 24 / Numer 1", pages = "46 - 63" }

@Article{ authors = " Piotr Białowolski, Tomasz Kuszewski, Bartosz Witkowski", title = "Prognozy kombinowane wskaźników makroekonomicznych z użyciem danych z testów koniunktury / Piotr Białowolski, Tomasz Kuszewski, Bartosz Witkowski.", journal = "Contemporary Economics", issue = "2010 / Tom 4 / Numer 4", pages = "41 - 58" }

@Article{ authors = " Piotr Białowolski, Tomasz Kuszewski, Bartosz Witkowski", title = "Macroeconomic Forecasts in Models with Bayesian Averaging of Classical Estimates / Piotr Białowolski, Tomasz Kuszewski, Bartosz Witkowski.", journal = "Contemporary Economics", issue = "2012 / Tom 6 / Numer 1", pages = "60 - 69" }