By Yang J.   Beirne J.   Liu G.   Sheng P.   in Applied Economics Letters

ISSN:1466-4291|20|10|949-952

Routledge Ltd‎(2013)‎

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By O’Beirne J L   Shelton R M   Lumley P J   Hofmann M P   in Advances in Applied Ceramics

ISSN:1743-6753|110|3|157-161

Maney Publishing‎(2011)‎

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