By Dagsvik J.K.   in Journal of Mathematical Psychology

ISSN:0022-2496|39|1|90-98

Academic Press‎(1995)‎

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By Dagsvik J.K.   Wennemo T.   Wetterwald D.G.   Aaberge R.   in Transportation Research Part B: Methodological

ISSN:0191-2615|36|4|361-384

Elsevier‎(2002)‎

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