| Year | 2014 |
| Month | November |
| Volume | 36 |
| Issue | 5 |
| Page | 168 |
| Author | Rizzo |
| Subject | Stationary Engine |
| Key Word | Pressure Pipe Connections Cooling Jacket and Connections Burners and Connecting Pipes Running QUAD |
| Article Title | QUAD - a Four-cylinder Double-acting Stirling Engine |