“Complexation of Ni (II) by Using 5-Nitrosalicylaldehyde Semicarbazone (NSS) As a Novel Analytical Reagent and Its Spectrophotometric Determination”. 2016. International Journal of Emerging Trends in Science and Technology 3 (09): 4604-8. http://igmpublication.com/ijetst.in/index.php/ijetst/article/view/1219.