//-->
Differencing interval and autocorrelation effects on portfolio diversification : additive versus multiplicative assumptions
Chen, Son-Nan, (1982)
Long-term dependence and least squares regression in investment analysis
Greene, Myron T., (1980)
Ridge regression and the multicollinearity problem in financial research : a case study
Marquette, R. Penny, (1980)
Energie en superramp
Dekker, P. G., (1980)