%0 Journal Article %T A Rejoinder on Energy versus Impact Indicators %A Loet Leydesdorff %A Tobias Opthof %J Computer Science %D 2011 %I arXiv %X Citation distributions are so skewed that using the mean or any other central tendency measure is ill-advised. Unlike G. Prathap's scalar measures (Energy, Exergy, and Entropy or EEE), the Integrated Impact Indicator (I3) is based on non-parametric statistics using the (100) percentiles of the distribution. Observed values can be tested against expected ones; impact can be qualified at the article level and then aggregated. %U http://arxiv.org/abs/1108.5845v1