Reply to Hagen & Sudarshan's Comment
arXiv:hep-th/9403156 · doi:10.1103/PhysRevLett.74.1033
Abstract
We show that the argument in Phys Rev Lett 70 (1993) 1360 is correct and consistent, and that Hagen & Sudarshan's solution has inconsistency leading to non-vanishing commutators of and even in physical states. This proves that many of HS's statements in their Comment are based merely on incorrect guess, but not on careful algebra.
one page, UMN-TH-1245/94