1. Directive 2009/28/EC. On the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC.2009.04.23. Official J Eur Union 2009;L140:16–2.
2. Directive 2009/30/EC amending Directive 98/70/EC as regards the specification of petrol, diesel and gas–oil and introducing a mechanism to monitor and reduce greenhouse gas emissions and amending Council Directive 1999/32/EC as regards the specification of fuel used by inland waterway vessels and repealing Directive 93/12/EEC. Official J Eur Union 2009;L140:88–113.
3. Selection and testing of populus alba and salix spp as bioenergy feedstock: preliminary results;Rosso;Appl Energy,2013
4. Chiaramonti D, Prussi M, Casini D, Tredici MR, Rodolfi L, Bassi N, et al. Review of energy balance in raceway ponds for microalgae cultivation: re-thinking a traditional system is possible. Appl Energy, 2013; 101–111.
5. Characterization of acid hydrolysis of sisal;Conceicao;Appl Energy,2013