Borsaru, M. et al. "The Application of Prompt-Gamma Neutron Activation Analysis to Borehole Logging for Coal." Applied Radiation and Isotopes 54/2 (2001): 335-343.

Borsaru, M. et al. "The Application of Prompt-Gamma Neutron Activation Analysis to Borehole Logging for Coal." Applied Radiation and Isotopes 54/2 (2001): 335-343.