1. Frederick, J.E. 1986. “The ultraviolet radiation environment of the biosphere”. InJ.G. Titus [ed.], Effects of Changes in Stratospheric Ozone and Global Climate, Vol. I. Overview. Washington, D.C.: U.S. Environmental Protection Agency, pp. 121 – 128.
2. Noonan, F.P., E.C. De Fabo and M.L. Kripke. 1981. “Suppression of contact hypersensitivity by UV radiation and its relationship to UV-induced suppression of tumor immunity.” Photochem. Photobiol34: 683 – 689.
3. Noonan, F.P., M.L. Kripke, G.M. Pedersen and M.I. Green. 1981. “Suppression of contact hypersensitivity in mice by ultraviolet irradiation is associated with defective antigen presentation.” Immunology43: 527 – 533.
4. De Fabo, E.C. and F.P. Noonan. 1983. “Mechanism of immune suppression by ultraviolet irradiation in vivo. I. Evidence for the existence of a unique photoreceptor in skin and its role in photoimmunology.”J. Exp. Med. 157:84–98.
5. Toews, G.B., P.R. Bergstresser and J.W. Streilein. 1980. “Epidermal Langerhans cell density determines whether contact hypersensitivity or unresponsiveness follows skin painting with DNFB.” J. Immunol.124: 445 – 453.