Authors: M Y Cheng; F U Hartl; J Martin; R A Pollock; F Kalousek; W Neupert; E M Hallberg; R L Hallberg; A L Horwich Journal: Nature Date: 1989-02-16 Impact factor: 49.962
Authors: A R Lussow; G Del Giudice; L Rénia; D Mazier; J P Verhave; A S Verdini; A Pessi; J A Louis; P H Lambert Journal: Proc Natl Acad Sci U S A Date: 1990-04 Impact factor: 11.205