Roy J R, 1993, "Comment on "The development of a new gravity - opportunity model for trip distribution"" Environment and Planning A 25(11) 1689 – 1691
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Comment on "The development of a new gravity - opportunity model for trip distribution"
J R Roy
Received 1 September 1993
Abstract. The integration of the gravity and intervening-opportunities model in the recent paper by Gonçalves and Ulysséa-Neto provokes interesting questions on the role of the number of intervening opportunities on either decreasing or increasing travel. In this note I discuss such issues, as well as making comparisons with recent innovations in spatial interaction theory.
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