The Econometric SocietyEconometrica: May 1981, Volume 49, Issue 3
Fellows of the Econometric Society as of January, 1981
https://doi.org/0012-9682(198105)49:3<807:FOTESA>2.0.CO;2-O
p.
807-817
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https://doi.org/0012-9682(198105)49:3<807:FOTESA>2.0.CO;2-O
p.
807-817