For example, Griffioen, R.D.; Thompson, R.C.; Huizenga, J.R. (1978). "Levels of 235Np excited by the 234U(3He, d) and 234U(alpha, t) reactions". Physical Review C. 18 (2): 671–678. Bibcode:1978PhRvC..18..671G. doi:10.1103/PhysRevC.18.671.
For example, Griffioen, R.D.; Thompson, R.C.; Huizenga, J.R. (1978). "Levels of 235Np excited by the 234U(3He, d) and 234U(alpha, t) reactions". Physical Review C. 18 (2): 671–678. Bibcode:1978PhRvC..18..671G. doi:10.1103/PhysRevC.18.671.