By Fung M.K.   Chow W.W.   in Economics Letters

ISSN:0165-1765|74|3|353-358

Elsevier‎(2002)‎

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By Chow W. W.   Michael S.   Schneider H. C.   in Journal of Modern Optics

ISSN:1362-3044|54|16-17|2413-2424

Taylor & Francis Ltd‎(2007)‎

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