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4. A regional-continental scale transport, diffusion, and deposition model—I. Trajectory model;Heffter;National Oceanic and Atmospheric Administration Technical Memorandum ERL ARL-50,1975
5. A regional scale (100 km) model of photochemical air pollution—I. Theoretical formulation;Lamb;U.S. Environmental Protection Agency Technical Report EPA-600/3-83-035,1983