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Testing the CAPM with time-varying risks and returns
Bodurtha, James N., (1991)
Changes in expected security returns, risk, and the level of interest rates
Ferson, Wayne E., (1989)
A general stationary stochastic regression model for estimating and predicting beta
D'Souza, Rudolph E., (1989)
Financial markets
Kolb, Robert W., (1996)
Financial institutions
Financial institutions and markets