Oliveira, M. J. T., Nogueira, F., Marques, M. A. L., & Rubio, A. (2009). Photoabsorption spectra of small cationic xenon clusters from time-dependent density functional theory. The Journal of Chemical Physics, 131(21), 214302-1-214302-6. Retrieved from http://www.fhi-berlin.mpg.de/th/th.html.