Sigala M (2004). “Using Data Envelopment Analysis for Measuring and Benchmarking Productivity in the Hotel Sector.” J Travel and Tourism Marketing 16(2/3): 39-60.

Sigala M (2004). “Using Data Envelopment Analysis for Measuring and Benchmarking Productivity in the Hotel Sector.” J Travel and Tourism Marketing 16(2/3): 39-60.

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