Ion formation upon electron collisions with valine embedded in helium nanodropletsNikolaus Weinberger, Stefan Ralser, Michael Renzler, Martina Harnisch, Alexander Kaiser, Stefan Denifl, Diethard K. Böhme and Paul ScheierEur. Phys. J. D, 70 4 (2016) 91DOI: https://doi.org/10.1140/epjd/e2016-60737-1