(Ingelesez) Raymond, Eric S. (editorea). "shell". The Jargon File.
economist.com
(Ingelesez)"The Internet's fifth man", Brain Scan, The Economist, Londres: Economist Group, abenduak 13, 2013, "Mr Pouzin created a program called RUNCOM that helped users automate tedious and repetitive commands. That program, which he described as a “shell” around the computer’s whirring innards, gave inspiration—and a name—to an entire class of software tools, called command-line shells, that still lurk below the surface of modern operating systems."
