@article{,
      note = {"November 1999."},
      url = {http://library.usi.edu/record/239848},
      title = {Nitrogen oxides (NOx) why and how they are controlled /  [microform] :},
      publisher = {Office of Air Quality Planning and Standards, U.S.  Environmental Protection Agency,},
      number = {EPA-456/F-99-006 R},
      recid = {239848},
      pages = {viii, 48 p. :},
      address = {Research Triangle Park, N.C. :},
      year = {1999},
}