A comparative study of green and chemically synthesized nano nickel oxide for multifunctional applications oleh Padma, Sharmila Ranju, Yeshas, Sri Lakshmi Kavya, S.K. Sukrutha, M.R. Anil Kumar, A. Naveen Kumar, M Kumaraswamy, B. Purushotham, Satish Babu Boppana