http://listserv.linguistlist.org/cgi-bin/wa?A2=ind98&L=hel-l&D=1&F=&S=&P=15278
"Using the
glottalic hyposthesis, Gamkrelidze and Ivanov show that Grassmann's Law,
rather than being an innovation in Gk and Skt, is actually derivable from
consistent PIE root structure constraints that work much more broadly
across
PIE."
"Grimm thought he had them unified,
not only with each other but also with later High German changes.
However,
his unification was the illusory result of a phonetic misunderstanding,
namely, that voiced aspirates and voiceless fricatives belong to the same
phonetic class, his aspiratae. "
"This set of
changes suggest that Germanic is a conservative branch of IE, not the
highly
innovative branch it's generally been thought to have been. G&I take this
argument further, demonstrating that PIE was, in fact, not the highly
inflected language that has been reconstructed from Lithuanian, Sanskrit,
Greek and Latin."