http://www.mxmindia.com/2015/02/the-birth-of-pi/#sthash.eT74hfR5.dpuf

http://www.campaignindia.in/Article/393327,rakhshin-patel-and-sumantra-sengupta-gain-majority-stake-in-mc-saatchi-direct–digital.aspx

http://www.bestmediainfo.com/2015/02/mc-saatchi-direct-digital-is-now-pi-communications/

http://www.exchange4media.com/59093_mc-saatchi-direct-digital-is-now-pi-communications.html