Citation: H\"ammer, Matthias; Pielnhofer, Florian; Janka, Oliver; Takahashi, Hirotaka; Gross, Peter; P\"ottgen, Rainer; H\"oppe, Henning A (2022). Polymorphism and optical, magnetic and thermal properties of the either phyllo- or inosilicate-analogous borosulfate Cu[B2(SO4)4].. Dalton transactions (Cambridge, England : 2003), 51, pp. 3104-3115.