Links
| www.phimmo.ch | Phimmo Immobilien AG |
| www.hscc.org.uk | HSCC Historic Formula 2 |
| www.groupcracing.com | Group C Racing |
| www.hunzikermotorsport.ch | Heinz Hunziker, Hunziker Motorsport GmbH |
| www.mastershistoricracing.com | FIA Historic Formula One |


| www.phimmo.ch | Phimmo Immobilien AG |
| www.hscc.org.uk | HSCC Historic Formula 2 |
| www.groupcracing.com | Group C Racing |
| www.hunzikermotorsport.ch | Heinz Hunziker, Hunziker Motorsport GmbH |
| www.mastershistoricracing.com | FIA Historic Formula One |