Origins and history of Y DNA Haplogroup J2

This short paper by Maciano Hay provides a good insight into the origin and distribution of this Y DNA Haplogroup to which I belong.

https://www.academia.edu/6089464/Origins_and_history_of_Haplogroup_J2_Y_DNA_?auto=download&email_work_card=download-paper

Sanauli's Mysterious Warriors by Disha Ahluwalia: a symbiosys of IVC and Steppe warriors?

 The Sanaulians coexisted with the late Harappan (Indus Valley Civilisation IVC) and I am of the opinion that this society was a symbiosys of IVC and the warriors from the Steppes.