Index form equations,
power integral bases
in
quintic fields
I.Gaál and
M.Pohst, Power integral bases in a parametric family of totally real cyclic
quintics, Math. Comp. 66(1997), 1689-1696.
I.Gaál and
K.Györy, Index form equations in quintic fields, Acta Arithm., 89(1999),
379--396.