Most of my content has been found in forums or provided via email by numerous collectors. The list below should give you plenty of reading material about the 2209 (ultra-thin) movement.
- Vympel Discussion with heaps of information
- More Vympel Information
- Many watch catalogs
- One of the best russian watch forum
- Dashiell's Russian Watch Collection
- Mark Gordon's Russian Watch Collection
- 3133 Movement Collection and Guide