@conference {186675,
	title = {Life Cycle assessment of biogas production in small-scale in Columbia},
	booktitle = {2019 ASABE Annual International Meeting},
	year = {2019},
	month = {7{\textendash}10 July},
	address = {Boston, Massachusetts, USA},
	author = {Omar Hijazi and Sonja Mettenleiter and Samer, Mohamed and Essam Abdelsalam and Jochen G Wiecha and Kathrin L Ziegler and Heinz Bernhardt}
}
