RT Journal Article SR Electronic T1 Europe ramps up defense R&D JF Science JO Science FD American Association for the Advancement of Science SP 1259 OP 1260 DO 10.1126/science.370.6522.1259 VO 370 IS 6522 A1 Wallace, Nicholas YR 2020 UL http://science.sciencemag.org/content/370/6522/1259.abstract AB