H. How to Assess the Environmental Footprint of the Gas Chain? OP_H_1_Daniel Hec.pdf OP_H_1_Daniel Hec_Paper.pdf OP_H_2_Jeongwoo Han.pdf OP_H_3_Tomohito Okamura.pdf OP_H_4_Marius Adelt.pdf OP_H_4_Marius Adelt_Paper.pdf