Hergenhahn, U., Kugeler, O., Rüdel, A., Rennie, E. E., & Bradshaw, A. M. (2001). Symmetry-Selective Observation of the N 1s Shape Resonance in N2. The Journal of Physical Chemistry A, 105(23), 5704-5708. Retrieved from http://dx.doi.org/10.1021/jp0038456.