Oppenheim, Alan V Discrete-Time signal processing - 2nd ed. - Singapore Pearson education 2004 - xxvi,870 p. - Pearson education signal Processing series/edit by Alan V.oppenheim . Includes Appendix, Bibliography and Index ISBN: 81-7808-244-6 Dewey Class. No.: S/C-S/T D65,4:(B) M90,N9;12