Comparison of short-term variations (15-minute averages) in outdoor and indoor PM2.5 concentrations.
Ramachandran G, Adgate JL, Hill N, Sexton K, Pratt GC, Bock D. Comparison of short-term variations (15-minute averages) in outdoor and indoor PM2.5 concentrations. J Air Waste Manag Assoc. 2000 Jul; 50(7):1157-66.