Clement Juglar was a French doctor and statistician. He was one of the first to develop an economic theory of business cycles. He identified the 7-11 year fixed investment cycle that is now associated with his name. Juglar's publications led to other business cycle theories by later economists.
Works
book
Des Crises commerciales et leur retour périodique en France, en Angleterre et aux États-Unis (1862)
Du Change et de la liberté d'émission (1868)
Les Banques de dépôt, d’escompte et d'émission (1884)