Cabaniss, John M., Jr., author.
[Ann Arbor, Mich.] : Emission Control Technology Division, Office of Mobile Sources, Office of Air and Radiation, U.S. Environmental Protection Agency, April 1984.
1984-
Landman, Larry C., author.
[Ann Arbor, Mich.] : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Mobile Sources, Emission Control Technology Division, Technical Support Staff, 1990.
1990