Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Shoichiro Ozaki,NOx should be recycled by stoping of NOx elimination by ammonia. Waste water purification center should be closed,GSC Advanced Research and Reviews,2582-4597,GSC Online Press,2023-05-30,15,,113-120,https://cir.nii.ac.jp/crid/1873679868055792000,https://doi.org/10.30574/gscarr.2023.15.2.0142