||Dimitry P. Grigorovich
||200hp Hispano-Suiza vee
The Grigorovich M.18 Flying Boat was a derivative of the M.15 and was developed at the same time as
the M.17, differing only in the use of a more powerful engine.
- Alan Durkota, Thomas Darcey, and Victor Kulikov. The Imperial Russian Air Service. Flying Machines Press, 1995. ISBN 0-9637110-2-4