1. T. Hägerstrand, “A Monte Carlo Approach to Diffusion”,Archives Européennes de Sociologie, vol. 6, 1965, pp. 43–67.
2. T. Hägerstrand, “Quantitative Techniques for Analysis of the Spread of Information and Technology,” inEducation and Economic Development, C. A. Anderson and M. J. Bowman, eds., Chicago, Aldine, 1965.
3. J. S. Coleman, E. Katz, and H. Menzel, “The Diffusion of an Innovation Among Physicians,”Sociometry, vol. 20, 1957, pp. 253–70.
4. Hägerstrand, “A Monte Carlo Approach to Diffusion,”op. cit.
5. Other cases examined include: 1) Politician and leader of the Cooperative Movement, Stockholm; 2) Politician, Stockholm; 3) Novelist, Stockholm; 4) Politician, Copenhagen; 7) Economist, Bern; 8) Jurist and economist, Paris; 5) Civil servant, Ostersund.