1. Origins and philosophy of building a temporal database to examine human transformation processes;Acevedo,1996
2. Urbanization;Berry,1990
3. Who will feed China?;Brown,1995
4. Urban population densities;Clark;Journal of the Royal Statistical Society,1951
5. Mapping city lights with nighttime data from the DMSP operational linescan system;Elvidge;Photogrammetric Engineering and Remote Sensing,1995