@ARTICLE{Lichtarski_Jan_Opinions_2010, author={Lichtarski, Jan and Zając, Czesław}, number={No 139}, journal={Organization and Management}, howpublished={online}, year={2010}, publisher={The Committee on Organizational and Management Sciences}, publisher={Warsaw School of Economics}, title={Opinions of Entrepreneurs and Managers on Management Improvement in Enterprises of Different Size Classes}, URL={http://journals.pan.pl/Content/98540/mainfile.pdf}, }