Nucl. Instrum. Methods Phys. Res. B

Heeren, R., Ciric, D., Yagura, S., Hopman, H. J., & Kleyn, A. W. (1992). Sputtering of a hydrogenated barium surface in a negative ion surface conversion source. Nucl. Instrum. Methods Phys. Res., Sect B, 69, 389–402.