The inorganic crystal structure data base. - Guenter Bergerhoff; R. Hundt; R. Sievers; I. D. Brown (J. Chem. Inf. Comput. Sci., 1983)

Chemical Abstracts ONLINE: a study of the quality of controlled terms. - Sabine Martin; Guenter Bergerhoff (J. Chem. Inf. Comput. Sci., 1991)