Signal Analysis (Dover Books on Electrical Engineering) - Tapa blanda

"This graduate-level text on Fourier transforms and linear systems offers a comprehensive but concise treatment including about 100 problems, all with solutions. Intended for graduate students, the book could also serve as a stimulating refresher course for professionals in this field.

Athanasios Papoulis (1921-2002) was a Greek-American engineer and applied mathematician. He taught for many years at the Polytechnic Institute of Brooklyn - now the Polytechnic Institute of New York University - where he was named University Professor. His main focus was in the area of communications and signal processing. He wrote over 150 scholarly papers and several highly regarded and widely used texts for electrical engineering students.