Fig. 2From: Fractal dimension analogous scale-invariant derivative of Hirsch’s indexJapanese institute-wise h5-index v.s. the number of articles. The fit function in the plot is \(y=1.6 x^{0.47}\). h5-index is correlated to the number of articles by coefficient of +0.85. The disaster-related research institutes are plotted in red “x”Back to article page