I'd avoid that site- from our Cisco proxy:

"Based on your organization's access policies, this web site ( http://drona.csa.iisc.ernet.in/~chiru/datascience/iisclectur... ) has been blocked because it has been determined by Web Reputation Filters to be a security threat to your computer or the organization's network. This web site has been associated with malware/spyware."