Fiziev, P.
Marinov, K.
Funding for this research was provided by:
NewCompStar COST Action MP1304
Bulgarian Nuclear Regulatory Agency (Grants for 2014, 2015 and 2016)
Foundation for Theoretical and Computational Physics and Astrophysics
Bulgarian Academy of Sciences (Program for career development of young scientists, DFNP-51/21.04.2016)