Khai, N. T.; Thiep, T. D.; An, T. T.; Cuong, P. V.; Vinh, N. T. Neutron Yield from (γ, N) and (γ, 2n) Reactions Following 100 MeV Bremsstrahlung in a Tungsten Target. Comm. Phys. 2009, 19, 53-58.