Cu2HoIn
Dwight, A.W.Kimball, C.W.
Journal of the Less-Common Metals (1987) 127, 179-182
a=6.576Å b=6.576Å c=6.576Å
α=90° β=90° γ=90°
Cu5Ho
Dwight, A.W.
Transactions of the American Society for Metals (1961) 53, 479-500
a=4.96Å b=4.96Å c=4.016Å
α=90° β=90° γ=120°