Media type: E-Article Title: Uncertainty analysis of photometer quality factor f_1' Contributor: Poikonen, Tuomas; Kärhä, Petri; Manninen, Pasi; Manoocheri, Farshid; Ikonen, Erkki imprint: IOP Publishing, 2009 Published in: Metrologia Language: Not determined DOI: 10.1088/0026-1394/46/1/009 ISSN: 0026-1394; 1681-7575 Keywords: General Engineering Origination: Footnote: