Vasudevan, VishnuVishnuVasudevan2025-10-132025-10-132025-079.78E+12https://www.penguin.co.in/book/longform-2025/http://repository.iitgn.ac.in0/handle/IITG2025/33066en-USBook Chapterpp. 272-289123456789/511