Addemdum to: ''The Mathematical Structure of Quantum Superspace as a   Consequence of Time Asymmetry''
  In this paper we improve the results of sec. VI of paper [M. Castagnino, Phys. Rev. D 57, 750 (1998)] by considering that the main source of entropy production are the photospheres of the stars. 
Roberto Aquilano, Mario Castagnino and Ernesto Eiroa