de Vilder, Robin G. and Visser, Marcel P. (2007): Volatility Proxies for Discrete Time Models. Unpublished.
Visser, Marcel P. (2008): Garch Parameter Estimation Using High-Frequency Data. Unpublished.
Visser, Marcel P. (2008): Ranking and Combining Volatility Proxies for Garch and Stochastic Volatility Models. Unpublished.
Visser, Marcel P. (2008): Forecasting S&P 500 Daily Volatility using a Proxy for Downward Price Pressure. Unpublished.
