On q-derived polynomials / R.J. StroekerOn q-derived polynomials / Roel J. StroekerStatistics of extremes: estimation and optimality / Ana Maria Santos Ferreira Gorjão HenriquesStatistics of extremes: estimation and optimality / Ana Maria Santos Ferreira Gorjão HenriquesUni- en bivariate analyse / Dimitri Mortelmans en Britt DehertoghARIMA-processen : de betekenis van univariate methoden voor de econometrie / door Eugène Gerard Frans van Winkel