"Migration Processes In The Armenian Highland From The Ancient Times" conference papers are now available online.
Yervand Grekyan's paper is also related to the subjects discussed in our group. He describes Catacomb culture and the apparition of that burial type in South Caucasus after 2500BC. The main reason of their migration was most probably the significant change in climatic conditions in most of West Eurasia during that period.
The paper is in Armenian with pictures.