1. Haytowitz, D.B. and Matthews, R.H. USDA Agriculture Handbook 8-11: Composition of Foods - Vegetables and Vegetable Products, USDA, Washington, DC, 1984.
2. Le Cochec, F., Les clones de Topinambour (Helianthus tuberosus L.), caracteres et methode d'amelioration, in Topinambour (Jerusalem Artichoke), Gosse, G. and Grassi, G., Eds., European Commission Report 13405, Commission of the European Communities (CEC), Luxembourg, 1988, pp.23-25.