Paths in space-time environments : a timegeographic study of movement possibilities of individuals"
[Lund] : Royal University of Lund, Dept. of Geography, 1976.
Lenntorp's PESASP (Program Evaluating the Set of Alternative Sample Paths) model is noteworthy becasue it represents the first attempt to operationalize the theoretical framework advanced by Hagerstrand in a manner that would allow meaningful policy evaluation.
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