3rd moment

[Graphics:SoftComptongr43.gif]

[Graphics:SoftComptongr44.gif]

Check that this is correct

[Graphics:SoftComptongr45.gif]

[Graphics:SoftComptongr46.gif]

Average over &mgr;e

[Graphics:SoftComptongr47.gif]

[Graphics:SoftComptongr48.gif]

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