Lovekush Babu, and Jolly Singh. “Role of Metal Complexes of Cu (II), Ni (II), Co (II) and Schiff Bases Derived from Heterocyclic Amines”. International Journal for Research in Applied Sciences and Biotechnology, vol. 8, no. 6, Nov. 2021, pp. 122-6, https://ijrasb.com/index.php/ijrasb/article/view/343.