Resumen
We have the pleasure of presenting to you the next issue of our journal ?Research Papers in Economics and Finance? (REF), published by the Faculty of Economics at Poznan University of Economics and Business. Bearing in mind the highest level of our publications, we publish only the manuscripts which have passed at least two reviews under the ?peer review? procedure, after initial verification by the Editorial Committee. The articles published within REF are available online in English and through open access. REF is a quarterly journal, with the fourth issue this year containing five papers.