By Ayala H.   in Tourism Management

ISSN:0261-5177|16|1|39-47

Elsevier‎(1995)‎

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By Farias M.   Ayala H. L.F.   Watson R. W.   in Petroleum Science and Technology

ISSN:1091-6466|27|12|1360-1379

Taylor & Francis Ltd‎(2009)‎

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By Hart D.P.   Ayala H.M.   Yeh O.C.   Boyce M.C.   in Wear

ISSN:0043-1648|220|1|9-21

Elsevier‎(1998)‎

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