The source of “background” fission events in experiments on superheavy elementsS. Heinz, S. Hofmann, V. Comas, D. Ackermann, J. Heredia, F. P. Heßberger, J. Khuyagbaatar, B. Kindler, B. Lommel and R. MannEur. Phys. J. A, 48 3 (2012) 32DOI: https://doi.org/10.1140/epja/i2012-12032-7