Poruţiu, A., Arion, F., Mureşan, I. i Stefko, O. 2016. Considerations Regarding a Comparative Economic Approach on Corn and Wheat Crops on a Representative Soil in Romania. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego. 16, 4 (grudz. 2016), 272–280. DOI:https://doi.org/10.22630/PRS.2016.16.4.120.