ŽNIDARČIČ, D., OSVALD, J. and TRDAN, S. (2004) “Plant characteristics for distinction of red chicory (Cichorium intybus L. var. silvestre Bisch.) cultivars grown in central Slovenia”, Acta agriculturae Slovenica, 83(2), pp. 251–260. doi:10.14720/aas.2004.83.2.15429.