Pai, MA , DP Sen Gupta, KR Padiyar, and N Senroy. 2016. Small signal analysis of integrated power systems. New Delhi: Narosa Publishing House Pvt. Ltd. http://www.narosa.com/books_display.asp?catgcode=978-81-8487-553-9.

Gangopadhyay, A , A Sampath, B Velury, DP Sen Gupta, and Dilip R Ahuja. 2016. “Wind and solar energy for reducing electricity deficits in Karnataka”. Current Science 111(5): 796-807.

Gupta, DP Sen, Ila Gupta, and Dilip R Ahuja. 2014. “All states stand to save electricity were Indian Standard Time to be advanced”. Current Science 106: 70–74. http://eprints.nias.res.in/479/.

Gupta, DP Sen. 2013. Our earth and our quest for energy. Bangalore: Prism Books. http://eprints.nias.res.in/410/.

Gupta, DP Sen, and Dilip R Ahuja. 2012. “Advance Indian Standard Time by half an hour”. The Hindu. http://eprints.nias.res.in/544/.

Ahuja, Dilip R, and DP Sen Gupta. 2012. “Year-round daylight saving time will save more energy in India than corresponding DST or time zones”. Energy Policy 42: 657–669. http://eprints.nias.res.in/290/.

Gupta, DP Sen, and Dilip R Ahuja. 2011. NIAS Report Options for adjusting India standard time for saving energy. Bangalore: National Institute of Advanced Studies, Bangalore. http://eprints.nias.res.in/422/.