Use the filter function to narrow down the selection by region, income, publication type and/or other criteria.
Evans, W.N., Ringel, J.S., Stech, D. 1999
Hsieh, C.R., Lin, Y.S. 1998
Townsend, J. 1998
Jackson, J.D., Saba, R.P. 1997
Barnett, P.G., Keeler, T.E., Hu, T.W. 1995
Harris, J.E. 1994