
<span class="sd">    References</span>
<span class="sd">    ----------</span>
<span class="sd">    [1] Jones, M. C. and Pewsey A. (2009). Sinh-arcsinh distributions. Biometrika 96: 761â€“780</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="n">np</span><span class="o">.</span><span class="n">sinh</span><span class="p">(</span><span class="n">delta</span> <span class="o">*</span> <span class="n">np</span><span class="o">.</span><span class="n">arcsinh<