On crystallography in higher dimensions. I. General definitions. Corrigendum

It is pointed out that the definition of crystal system as given in Neubüser, Wondratschek & Billow [Acta Cryst. (1971), A27, 517-520] is not dimension-independent. Nevertheless it leads to no ambiguity for dimensions 1, 2, 3, and 4, which are the only ones in which it has been used in subsequent papers. An emendation will be given in Neubüser, Plesken & Wondratschek [match (Informal Commun. Math. Chem.) (1980), to be published].