| Year | 1997 |
| Date | 19-Dec |
| Volume | 179 |
| Issue | 4,057 |
| Page | 748 |
| Category | Workshop |
| Part | 4 |
| Title | The Design of Epicyclic or Planetary Gearing |
| Author | Len Snell |
| Notes | Further epicyclic gearbox information. Gear stressing, rim thickness below tooth profile, planet gear bearings, efficiency of epicyclic gearing, general comments |