Sommavilla, V; Haidacher-Gasser, D; Sgarbossa, M; Zidorn, C (2012). "Seasonal variation in phenolics in leaves of Celtis australis (Cannabaceae)". Biochemical Systematics and Ecology. 41: 110–114. doi:10.1016/j.bse.2011.12.028. ISSN0305-1978.
Sommavilla, V; Haidacher-Gasser, D; Sgarbossa, M; Zidorn, C (2012). "Seasonal variation in phenolics in leaves of Celtis australis (Cannabaceae)". Biochemical Systematics and Ecology. 41: 110–114. doi:10.1016/j.bse.2011.12.028. ISSN0305-1978.