@article{Łobos_Szewczyk_2013, title={Impact of Intangible Assets on the Economic Effectiveness as Illustrated by National Enterprises in the Manufacturing Mushroom Compost}, volume={27}, url={http://www1.up.poznan.pl/jard/index.php/jard/article/view/600}, number={1}, journal={Journal of Agribusiness and Rural Development}, author={Łobos, Krzysztof and Szewczyk, Mirosława}, year={2013}, month={Dec.}, pages={143-152}