Authors: G A Wells; A C Scott; C T Johnson; R F Gunning; R D Hancock; M Jeffrey; M Dawson; R Bradley Journal: Vet Rec Date: 1987-10-31 Impact factor: 2.695
Authors: H Büeler; M Fischer; Y Lang; H Bluethmann; H P Lipp; S J DeArmond; S B Prusiner; M Aguet; C Weissmann Journal: Nature Date: 1992-04-16 Impact factor: 49.962