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<h2>Total Cross Sections</h2>

The <code>SigmaTotal</code> class returns the total, elastic, diffractive 
and nondiffractive cross sections in hadronic collisions, and also the
slopes of the <i>d(sigma)/dt</i> distributions. Most of the parametrizations 
used are from [<a href="Bibliography.html" target="page">Sch94, Sch97</a>] which bor