Ian Parberry, "Adventures in ASCII Art" Leonardo, Vol. 47, No. 3, pp. 263-264, 2014.
Abstract
This is an account of the author’s three-and-a-half decade obsession with ASCII art in which he progresses from a manual typewriter to computers, pixel shaders, real-time animation, and a new variant of color ASCII art that can be reproduced on a manual typewriter using only three or four colored ribbons.