@ARTICLE{Aluchna_Maria_Pyramidal_2013, author={Aluchna, Maria}, number={No 154}, journal={Organization and Management}, howpublished={online}, year={2013}, publisher={The Committee on Organizational and Management Sciences}, publisher={Warsaw School of Economics}, title={Pyramidal structures in Poland Introduction Struktury piramidowe w Polsce}, URL={http://ochroma.man.poznan.pl/Content/98667/mainfile.pdf}, }