Nikolla, M., Kapaj, I., Kapaj, A., Mulliri, J., & Harizaj, A. (2012). MEASURING THE EFFECT OF PRODUCTION FACTORS ON YIELD OF GREENHOUSE TOMATO PRODUCTION USING MULTIVARIATE MODEL. European Scientific Journal, ESJ, 8(23). https://doi.org/10.19044/esj.2012.v8n23p%p