1. BENZAQUEN S. (1983) Estimación de los momentos espectrales a través de los puntos máximos y mínimos,Reporte 83–17, Departmento de Matemáticas y Ciencia de la Computación, Universidad Simón Bolívar.
2. BENZAQUEN, S. and CABAÑA, E.M. (1982) The expected measure of the level sets of a regular stationary Gaussian process.Pac. J. Math 103, 9–16.
3. CRAMER, H. and LEADBETTER, M.R. (1967)Stationary and related stochastic processes, New York: Wiley.
4. LINDGREN, G. (1974) Spectral moment estimation by means of level crossings.Biometrika 61, 401–418.
5. RICE, S. (1945) Mathematical analysis of random noise, Bell System Tech. J.24 Reprinted inSelected papers on noise and stochastic processes. (Wax, N., ed.). New York: Dover 1954.