Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hironobu Uchiyama and T. Yamada and Kenneth T. V. Grattan and T. Yamaguchi,A practical fiber optic air-ratio sensor operating by flame color detection,Review of Scientific Instruments,0034-6748,AIP Publishing,1997-01-01,68,,197-202,https://cir.nii.ac.jp/crid/1870865117940423552,https://doi.org/10.1063/1.1147809