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The econometrics of panel data ; Vol. 1
Maddala, Gangadharrao S., (1993)
The econometrics of panel data ; Vol. 2
The econometrics of panel data : a selective introduction
Urga, Giovanni, (1992)
Branchenspezifische Weiterbildungsberatungs- undQualitätsringsysteme - ein Modellprojekt nimmt Gestalt an
Schönfeld, Peter, (2002)
Some duality theorems for the non-linear vector maximum problem
SCHÖNFELD, Peter,
Best linear minimum bias estimation in linear regression