Urban
and Environmental:
"An Econometric
Model of Wastepaper Recycling in the U.S.," (with G. S. Gill). Resources
Policy, December 1980, 320-325.
"Testing Rational
Expectations Hypothesis in a Secondary Materials Market,"(with C. Kinkley).
Journal of Environmental Economics and Management, 1983, 282-291.
"An Econometric
Study on the Dynamics of Urban Spatial Structure,"(with R.Numrich).
Journal of Urban Economics, July 1988, 55-79.
"On the Estimation
and Interpretation of Urban Density Gradients" (with R. H. Lankford and
R. Numrich), Journal of Business and Economic Statistics, April 1989,
227-235.