1. G. MARLEAU, A. HÉBERT, and R. ROY, “A User Guide for DRAGON Version4,” Report IGE-294, Institut de Génie Nucléaire, École Polytechnique de Montréal, Canada (2006).
2. V. S. VLADIMIROV, PhD thesis, V. A. Stecklova Mathematics Institute (1959).
3. J. R. ASKEW, “A Characteristics Formulation of the Neutron Transport Equation in Complicated Geometries,” Report AAEW-M 1108, United Kingdom Atomic Energy Establishment, Winfrith (1972).
4. A new characteristics algorithm for 3D transport calculations