@article{Helal2011,
    author = "Helal, M.A. and Islam, A.K.M.A.",
    title = "Elastic, electronic and optical properties of hypothetical Sn N Ni3 and Cu N Ni3 in comparison with superconducting Zn N Ni3",
    journal = "Physica B, Condensed Matter",
    year = "2011",
    volume = "406",
    pages = "4564-4568",
    ASTM_id = "PHYBE3"
}