D. Avinash Balakrishnan, Dr. Shanti Kumar Nair, DR. K.R.V. SUBRAMANIAN, N, R. A. N. J. U. S. H. A. R. D. R. S. I. V. A., and ANJALI P, “The art, method and manner of fabricating highly porous thin film nio electrode for supercapacitors”, U.S. Patent 1867/CHE/20122012.