Treatment of Heavy Quarks in Deeply Inelastic Scattering
  We investigate a simplified version of the ACOT prescription for calculating deeply inelastic scattering from Q^2 values near the squared mass M_H^2 of a heavy quark to Q^2 much larger than M_H^2. 
Michael Kr\"amer, Fredrick I. Olness, Davison E. Soper