00687nam 2200157z- 450 9910712292203321(CKB)5470000002491196(EXLCZ)99547000000249119620230509c2018uuuu -u- -engNREL comparison between absolute cavity pyrgeometers and pyrgeometers traceable to world infrared standard group and the InfraRed integrating sphereNational Renewable Energy LaboratoryGolden, COBOOK9910712292203321NREL comparison between absolute cavity pyrgeometers and pyrgeometers traceable to world infrared standard group and the InfraRed integrating sphere3319031UNINA