References
- Riley , RL , Permutt , S and Kaufman , JE . 1971 . Convection, air mixing, and ultraviolet air disinfection in rooms . Arch Environ Health , 22 : 200 – 207 .
- Riley , RL and Permutt , S . 1971 . Room air disinfection by ultraviolet irradiation of upper air: Air mixing and germicidal effectiveness . Arch Environ Health , 22 : 208 – 219 .