ROBERTS MICHAEL J. (2004). SIGNALS AND SYSTEMS. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
Lua i Stíl Chicago (17ú heag.)ROBERTS MICHAEL J. SIGNALS AND SYSTEMS. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2004.
Lua MLA (9ú heag.)ROBERTS MICHAEL J. SIGNALS AND SYSTEMS. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2004.
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