(Pearson International). ISBN 0-321-50130-6 ^ Keller, F. J, Gettys, W. E. et al. (1993), p 28–29 ^ Riley, K.F.; Hobson, M.P.; Bence, S.J. (2010). Mathematical
21 (24): 3374--6. doi:10.1016/S0264-410X(03)00336-0. PMID 12850343. ^ Keller, Margaret A. and E. Richard Stiehm (2000). “Passive Immunity in Prevention
Stuckey ,A. L. Segars ,T. Scott ,L. Talent ,G. D. Bossart ,P. A. Fair ,J. M. Keller (2009). “Health effects of perfluorinated compounds—What are the wildlife
Buczkowski; R., Jaumann; A., Yingst; T., McCord; R., Gaskell; T., Roatsch; H. E., Keller; C.A., Raymond; C.T., Russell (March 2012). "Mega-Impacts into