When using programs that use GNU Parallel to process data for publication please cite:
O. Tange (2011): GNU Parallel - The Command-Line Power Tool,
;login: The USENIX Magazine, February 2011:42-47.
This helps funding further development; and it won't cost you a cent.
Or you can get GNU Parallel without this requirement by paying 10000 EUR.
To silence this citation notice run 'parallel --bibtex' once or use '--no-notice'.