Krishnamurthy Subramanian (11 November 2016). Will Black Be Back?.The Times of India
http://epaperbeta.timesofindia.com/NasData//PUBLICATIONS/THETIMESOFINDIA/AHMEDABAD/2016/11/11/PagePrint/11_11_2016_014_3c056f8a7fc7fa25a442fcc65b8d14b1.pdf