Hellwig M.,
Rational Expectations and the Markov Property of Temporary Equilibrium Processes,
Journal of Mathematical Economics, vol. 9, pp. 135-144, 1982.
Hellwig M.,
Rational Expectations Equilibrium with Conditioning on Past Prices: A Mean-Variance Example,
Journal of Economic Theory, vol. 26, pp. 279-312, 1982.
Hellwig M.,
Zur Informationseffizienz des Kapitalmarktes,
Zeitschrift für Wirtschafts- und Sozialwissenschaften, vol. 102, pp. 1-27, 1982.