Before revision: The analysis of Multiple Scattering was started by Bothe (Bothe, W,1921) and Wentzel (Wentzel, G,1922) in the Nineteen twenties using well-known approximation of small angles.
After revision: The analysis of Multiple Scattering was started by Bothe (Bothe, W,1921) and Wentzel (Wentzel, G,1922) in the nineteen twenties using well-known approximation of small angles.