1. T.B. Massalski, Phase diagrams., In: Encyclopedia of Materials: Science and Technology, K.H.J. Buschow, R.W. Cahn, M.C. Flemings, B. Ilschner, E.J. Kramer, S. Mahajan, P. Veyssière (eds), Elsevier Ltd, 2001.
2. F. Grønvold, R. Møllerud, and E. Røst, The High-Temperature Phases Ni3Se2 and Ni6Se5, Acta Chem. Scand., 1996, 20, p 1997.
3. J.H. Hiller, and W. Wegener, Untersuchungen im System Nickel-Selen, Neues Jahrb. Miner. Abh., 1960, 94, p 1147–1159.
4. K. Kuznetsov, A. Eliseev, Z. Spak, K. Palkina, M. Sokolova, A. Dimitriev, Proc. 4th All-Union Conf. Semiconductor Materials, Moscow, USSR (1961) 159.
5. K.L. Komarek, and K. Wessely, Die Systeme Nickel-Selen and Kobalt-Nickel-Selen, Monatsh. Chem., 1972, 103, p 923.