Authors: J S Fruchter; D E Robertson; J C Evans; K B Olsen; E A Lepel; J C Laul; K H Abel; R W Sanders; P O Jackson; N S Wogman; R W Perkins; H H VAN Tuyl; R H Beauchamp; J W Shade; J L Daniel; R L Erikson; G A Sehmel; R N Lee; A V Robinson; O R Moss; J K Briant; W C Cannon Journal: Science Date: 1980-09-05 Impact factor: 47.728