1. Asymptotic independence of the numbers of high and low level crossings of stationary Gaussian processes;Berman;Ann. Math. Statist.,1971
2. On some global measures of the deviations of density function estimates;Bickel;Ann. Math. Statist.,1973
3. The invariance principle for a lattice of random variables;Kuelbs;Ann. Math. Statist.,1968
4. Théorie de l'Addition des Variables Aléatoires;Lévy,1937
5. Lévy, P. (1948). Processus stochastiques et le mouvement Brownien. Paris.