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Tourism Management > 1996 > 17 > 8 > 557-566
Water Science and Technology > 1996 > 33 > 2 > 119-131
International Transactions in Operational Research > 1995 > 2 > 2 > 213-221
IEE Proceedings A - Physical Science, Measurement and Instrumentation,... > 1984 > 131 > 6 > 397 - 405
IEE Proceedings A - Physical Science, Measurement and Instrumentation,... > 1983 > 130 > 4 > 207 - 212