Haryadi, H. et al. 2022. The Effect of Couple Doping Gd and Co on The Physical Characteristics of LaFeO3 Thick Film for Acetone Gas Sensor Application. Jurnal Penelitian Fisika dan Aplikasinya (JPFA). 12, 2 (Dec. 2022), 115–126. DOI:https://doi.org/10.26740/jpfa.v12n2.p115-126.