http://www.continuitas.com/intro.html
"As is known, until recently the received doctrine for the origins of
Indo-Europeans (IE) in Europe was centered upon the idea - now called
the `myth' (Häusler 2003) - of an Indo-European Invasion in the Copper
Age (IV millennium B.C.), by horse-riding warrior pastoralists. The
last and most authoritative version of this theory was the so called
kurgan theory, elaborated by Marija Gimbutas, according to which the
Proto-IE were the warrior pastoralists who built kurgan, i.e. burial
mounds, in the steppe area of Ukraine (e.g. Gimbutas 1970, 1973, 1977,
1980)."
" Although most IE specialists are still reluctant to admit it, this
chronology, as well as the scenario behind it, can now be considered
as altogether obsolete. The evidence collected by archaeology in the
last thirty years, in fact, overwhelmingly prove the absence of any
large scale invasion in Europe, and the uninterrupted continuity of
most Copper and Bronze Age cultures of Europe from Neolithic, and of
most Neolithic cultures from Mesolithic and final Paleolithic."
Hari Ohm Tat Sat.
M. Kelkar