By Kotter, John, Rathgeber, Holger
By Kersten, Holger, Gruber, Elmar R.
By Friebe, Cord, Kuhlmann, Meinard, Lyre, Holger, Näger, Paul M., Passon, Oliver, Stöckler, Manfred, Brewer, William D.
By Leue, Holger, Lay, Graeme
By Gruber, Elmar R., Kersten, Holger
By Hirsch Hadorn, Gertrude, Hoffmann-Riem, Holger, Biber-Klemm, Susette, Grossenbacher-Mansuy, Walter, Joye, Dominique, Pohl, Christian, Wiesmann, Urs, Zemp, Elisabeth, Jager, Jill
By Albeverio, Sergio, Jentsch, Volker, Kantz, Holger
By Andresen, Sabine, Diehm, Isabell, Sander, Uwe, Ziegler, Holger
By Kersten, Holger, Czisch, T.W-.
By Kotter, John P, Rathgeber, Holger, Mueller, Peter, Johnson MD, Dr Spencer
By Mosimann, Anton, Hofmann, Holger
By Klein, Holger
By Preuschoft, Holger, etc.