1. Application of the GRG algorithm to optimal control problems;Abadie,1970
2. Location and land-use — Toward a general theory of land rent;Alonso,1964
3. Optimal dynamic patterns of location in a metropolitan region;Andersson,1971
4. Models for investments in a road network;Bergendahl,1969
5. Structure of the city system — a working model;Brotchie,1972