TY  - RPRT
TI  - Spatial aggregation in gravity models: 2. One-dimensional population density models.
AU  - M Batty
AU  - P K Sikdar
PY  - 1982
DO  - 10.1068/a140525
UR  - https://pubmed.ncbi.nlm.nih.gov/12265195/
ID  - 12265195
ER  -