TY - JOUR A1 - George, L A A1 - Hard, T M A1 - O?Brien, R J T1 - Measurement of free radicals OH and HO2 in Los Angeles smog Y1 - 1999/05/ N1 - R826176 N1 - R823319 JF - JOURNAL OF GEOPHYSICAL RESEARCH J1 - J GEOPHYS RES VL - 104 IS - D9 SP - 11643 EP - 11655 PB - American Geophysical Union ER - TY - JOUR A1 - Hard, T M A1 - George, L A A1 - O'Brien, R J T1 - An absolute calibration for gas-phase hydroxyl measurements. Y1 - 2002// N1 - R826176 N1 - R823319 JF - ENVIRONMENTAL SCIENCE & TECHNOLOGY J1 - ENVIRON SCI TECHNOL J2 - ENVIRONMENTAL SCIENCE & TECHNOLOGY J3 - Enviornmenal Research VL - 36 IS - 8 SP - 1783 EP - 1790 ER -