Authors: D Alexander; R M Goodman; M Gut-Rella; C Glascock; K Weymann; L Friedrich; D Maddox; P Ahl-Goy; T Luntz; E Ward Journal: Proc Natl Acad Sci U S A Date: 1993-08-01 Impact factor: 11.205
Authors: J P Métraux; H Signer; J Ryals; E Ward; M Wyss-Benz; J Gaudin; K Raschdorf; E Schmid; W Blum; B Inverardi Journal: Science Date: 1990-11-16 Impact factor: 47.728