| Year | 2018 |
| Date | 16-Mar |
| Volume | 220 |
| Issue | 4,582 |
| Page | 421 |
| Category | Internal Combustion |
| Part | 1 |
| Title | Two Pistons and Three Con Rods |
| Author | Wolfgang Tepper |
| Notes | Describes a water-cooled four-stroke opposed-piston engine. Background, cylinder and cylinder head |