Gwen Robbins Schug; Subhash R. Walimbe (13 April 2016). A Companion to South Asia in the Past. John Wiley & Sons. pp. 39–. ISBN978-1-119-05547-1. Quote: “Soanian and Soanian‐like assemblages are known throughout the entire Siwalik or Sub‐ Himalayan region, from Pakistan to northeast India including Nepal...”