Authors: B Nagy; J E Modzeleski; V E Modzeleski; M A Mohammad; L A Nagy; W M Scott; C M Drew; J E Thomas; R Ward; P B Hamilton; H C Urey Journal: Nature Date: 1971-07-09 Impact factor: 49.962
Authors: K Kvenvolden; J Lawless; K Pering; E Peterson; J Flores; C Ponnamperuma; I R Kaplan; C Moore Journal: Nature Date: 1970-12-05 Impact factor: 49.962