Inhaltsverzeichnis: “....1 Construction of G1r (qi) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 -- 2.2 Construction of G2...”

Inhaltsverzeichnis: “... and topology of S3=S1 . . . . . . . . . . . . . . . . . . . 12 -- 2.2 S1-symmetry near the singular set...”