ISAJET 7.37: A Monte Carlo Event Generator for $pp$, $\bar pp$, and   $e^+e^-$ Interactions
  ISAJET is a Monte Carlo event generator for $pp$, $\bar pp$, and $e^+e^-$ interactions at high energies. This document summarizes the physics underlying the program and describes how to use it. 
H. Baer, F.E. Paige, S.D. Protopopescu, X. Tata