The Armenian hypothesis argues for the latest possible date of Proto-Indo-European (sans Anatolian), a full millennium later than the mainstream Kurgan hypothesis. In this, it figures as an opposite to the Anatolian hypothesis, in spite of the geographical proximity of the respective Urheimaten suggested, diverging from the timeframe suggested there by full three millennia.
I.M. Diakonoff, The Prehistory of the Armenian People (1984).
Robert Drews, The Coming of the Greeks (1988), argues for late Greek arrival in the framework of the Armenian hypothesis.
Martiros Kavoukjian, Armenia, Subartu, and Sumer : the Indo-European homeland and ancient Mesopotamia, trans. N. Ouzounian, Montreal (1987), ISBN 0921885008.