| Number | Author | Date | Title |
|---|---|---|---|
| 539 | Richard Wordingham | 2003-08-12 | Fwd: Principle of Minimum Energy; Least Effort |
| 540 | Richard Wordingham | 2003-08-12 | Re: Fwd: Principle of Minimum Energy; Least Effort - Full URL |
| 541 | Richard Wordingham | 2003-08-12 | Re: Fwd: Principle of Minimum Energy; Least Effort - Correction |