author, Frank Glockling ; formula index, Edgar Rudolph ; editors, Ulrich Krüerke, Christa Siebert ; chief editor, Ulrich Krüerke ; gw, us. -- Springer-Verlag, 1988. -- (Gmelin handbook of inorganic chemistry / prepared and issued by Gmelin-Institut für Anorganische Chemie der Max-Planck-Gesellschaft zur Förderung der Wissenschaften ; director, Ekkehard Fluck ; [system no. 45] . Ge, organogermanium compounds ; pt. 1).