1. CRX : a code for rectangular and hexagonal lattices based on the method of characteristics;Hong;Ann. Nucl. Energy,1998
2. CASMO-4 characteristic method for two-dimensional PWR and BWR core calculations;Smith,2000
3. DeCART v1.2 User’s Manual, KAERI/TR-3438/2007;Cho,2007
4. Two-dimensional whole core transport calculations using paragon;Kucukboyaci,2009
5. Apollo2 year 2010;Sanchez;J. Nucl. Eng. Technol.,2010