||Dimitry P. Grigorovich
||120hp Le Rhône rotary
A few examples of the Grigorovich M.20 Flying Boat were produced in 1918. It was derived from the old M.5.
It served with the Bolsheviks in the Russian Civil War.
- Alan Durkota, Thomas Darcey, and Victor Kulikov. The Imperial Russian Air Service. Flying Machines Press, 1995. ISBN 0-9637110-2-4