1. Proposed standard guide for choosing locations and sampling methods to monitor atmospheric deposition;ASTM,1988
2. The statistics of chemical trace concentrations in the steady state;Baker;Atmospheric Environment,1984
3. The problem of missing data on spatial surfaces;Bennett;Ann. Ass. Am. Geograph.,1984
4. Significance of regional source contributions to urban PM-10 concentrations;Batterman;J. Air Pollut. Control Ass.,1987