author, Anton Meller ; editors, Jürgen Faust, Kurt Niedenzu ; gw, us. -- Springer, 1991. -- (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. 13 . B, boron compounds ; 4th suppl. v. 3a . Boron compounds).