1. Agronormativy (2015) Normativy pro zemědělskou a potravinářskou výrobu: AGroConsult. http://www.agronormativy.cz/. Accessed 5 April 2019
2. Albrecht KA, Goldstein W (1997) Silphium perfoliatum: A North American prairie plant with potential as a forage crop. In Conference June 8–19 Conference Year, Winnipeg 167–168
3. Albrecht KA, Han KJ, Combs DK (2017) Silphium perfoliatum L. silage as alterative to lucerne and maize silage in dairy cow rations. Grassland resources for extensive farming systems in marginal lands: major drivers and future scenarios 22(1): 500–502
4. Aurbacher J, Benke M, Formowitz B, Glauert T, Heiermann M, Herrmann C, Idler C, Kornatz P, Nehring A, Rieckmann C, Rieckmann G (2012) Energiepflanzen für Biogasanlagen (Broschüre No. 553). Fachagentur Nachwachsende Rohstoffe eV: Rostock, Germany, 1–84
5. Bacenetti J, Negri M, Fiala M, González-García S (2013) Anaerobic digestion of different feedstocks: impact on energetic and environmental balances of biogas process. Sci Total Environ 463:541–551