Інформаційні ресурси
1. The Online Books Library. - http://digital.library.upenn.edu/books/
2. Literary Resources on the Net. - http://andromeda.rutgers.edu/~jlynch/Lit/
3. The American Comparative Literature Association. - http://www.acla.org/
4. VoS, a database of academic resources. - http://vos.ucsb.edu/
5. Gamkrelidze T. V., Ivanov V. V. The Early History of Indo-European Languages. - http://rbedrosian.com/Classic/sciam1.htm
6. Indo-European homeland and migrations: half a century of studies and discussions. - http://dienekes.blogspot.com/2013/06/indo-european-homeland-and-migrations.html
7. Kurgan hypothesis. From Indo-European Languages. - http://indo-european.eu/wiki/index.php/Kurgan_hypothesis
8. Gray Russell D., Atkinson Quentin D. Language-tree divergence times support the Anatolian theory of Indo-European origin. - https://researchspace.auckland.ac.nz/bitstream/handle/
2292/10655/ nature02029.pdf%3Fsequence%3D3