John Petrich, W7FU, and Tom McDermott, N5EG, “Digital Signal Processing and GNU Radio Companion”, Part 1, QEX, July/August 2014, pp 41-46

John Petrich, W7FU, and Tom McDermott, N5EG, “Digital Signal Processing (DSP) Projects”, Part 2, QEX, September/October 2014, pp 25-30