Fri, 07 Apr 2017 10:47:25 +0200 wenzelm explicit Sessions.Selection;
Fri, 07 Apr 2017 10:56:41 +0200 Lars Hupel more general signature; works for all terms, not just frees
Thu, 06 Apr 2017 21:37:13 +0200 haftmann session containing computational algebra
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