SimProp v2r3: Monte Carlo simulation code of UHECR propagation
  We introduce the new version of SimProp, a Monte Carlo code for simulating the propagation of ultra-high energy cosmic rays in intergalactic space. This version, SimProp v2r3, allows the choice of many more models for the extragalactic background light spectrum and evolution and photodisintegration cross sections and branching ratios than previous versions of SimProp. 
Roberto Aloisio, Denise Boncioli, Armando di Matteo, Aurelio Grillo,   Sergio Petrera and Francesco Salamida
astro-ph.HE astro-ph.IM