. "H.U" . "H.U Zimmer" . "Horst-Ulrich" . "H. U." . "Horst-Ulrich Zimmer"@pl-PL . . "H. U. Zimmer" . "H.-U" . "Zimmer" . "H." . . "H. U. Zimmer" . . "H.U. Zimmer"@nl-NL . "H.-U Zimmer" . "U." . . .