By Keller M.B.   in European Neuropsychopharmacology

ISSN:0924-977X|5|3|250-250

Elsevier‎(1995)‎

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By Keller M.B.   Hirschfeld R.M.A.   Hanks D.   Lambertini L.   in Economics Letters

ISSN:0165-1765|55|2|279-283

Elsevier‎(1997)‎

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