authors, Norbert Baumann ; chief editor, Brighitte Heibel ; pt. 2 (gw) - pt. 8 (us). -- 8th ed. -- Springer, 1985-. -- (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. 9 . S, sulfur-nitrogen compounds).