M.K. Bahadirkhanov, B.K. Ismaylov, K.A. Ismailov, N.F. Zikrillaev, S.B. Isamov, “On How Thermal Annealing Affects the State Of Clusters Of Nickel Atoms In Crystal Lattice Of Silicon”, IJAST, vol. 29, no. 9s, pp. 6308 - 6312, Jun. 2020.