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Rational expectations and the 'natural' rate of unemployment : some empirical tests
Koskela, Erkki, (1979)
Inflation, stagflation, relative prices, and imperfect information
Cukierman, Alex, (1984)
Rationale Erwartungen und die Theorie der Stabilisierungspolitik
Klausinger, Hansjörg, (1980)