TY - BOOK AU - "Oppenheim, Alan V" AU - "Nawab, Hamid S" AU - "Willsky, Alan S" TI - Signals and systems SN - 8178086883 CY - New Delhi KW - Discrete time system KW - Fourier analysis -- Continuous time signals KW - Mathematical representation KW - Signals and Systems N1 - includes bibliography and index ER -