[1] J. Anděl: Measures of dependence in discrete stationary processes. Math. Operationsforsch. Statist., Ser. Statistics 10 (1979), 107-126. MR 0542367

[2] J. Anděl: On extrapolation in two-dimensional stationary processes. Math. Operationsforsch. Statist., Ser. Statistics 11 (1980), 315-326. MR 0596515

[3] J. Anděl: Some Measures of Dependence in Discrete Stationary Processes. (in Czech). Doctoral dissertation, Dept. of Statistics, Charles University, Prague, 1980. MR 0542367

[4] T. W. Anderson: Repeated measurements on autoregressive processes. JASA 73 (1978), 371-378. MR 0501667

[5] T. Cipra: Correlation and Improvement of Prediction in Multivariate Stationary Processes. (in Czech). Ph. D. dissertation, Dept. of Statistics, Charles University, Prague, 1980.

[6] C. W. J. Granger: Investigating causal relations by econometric models and cross spectral methods. Econometrica 37 (1969), 424-438.

[7] D. A. Pierce L. D. Haugh: Causality in temporal systems. Journal of Econometrics 5 (1977), 265-293. MR 0443261