Jackowicz, K. and Mielcarz, P. (2015) “The Impact of Investment on Operational Performance during the Recent Crisis”, Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, (2(938), pp. 31–43. doi:10.15678/ZNUEK.2015.0938.0203.