Developing a Low-Cost Passive Method for Long-Term Average Levels of Light-Absorbing Carbon Air Pollution in Polluted Indoor Environments. - Lara P. Clark; Sreekanth Vakacherla; Bujin Bekbulat; Michael Baum; Songlin Yang; Pao Baylon; Timothy R. Gould; Timothy V. Larson; Edmund Y. W. Seto; Chris D. Space; Julian D. Marshall (Sensors, 2020)