Resonance effects in near-threshold electron-impact excitation of the 143.4 nm line in the Pb+ ionAnna N. Gomonai, Yuriy I. Hutych and Aleksandr I. GomonaiEur. Phys. J. D, 71 2 (2017) 31DOI: https://doi.org/10.1140/epjd/e2016-70603-9