ATCP - Green,J.M.; Draper,A.K.; Dowler,E.A.; Fele,G.; Hagenhoff,V.; Rusanen,M.; Rusanen,T. - Public understanding of food risks in four European countries: a qualitative study. - European Journal of Public Health 2005 Oct; 15(5): 523-7
AOJR - Draper,G.J.; Parry,H.B. - Scrapie in sheep: the hereditary component in a high incidence environment. - Nauchni trudove na Visshiia meditsinski institut, Sofiia 1962 Aug 18; 195: 670-2