@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://journals.pan.pl/Content/98667/mainfile.pdf},
}