- Models, concepts, theories, and formal languages in chemistry and their use as a basis for computer assistance in chemistryIvar Ugi, Johannes Bauer, Carola Blomberger, Josef Brandt, Andreas Dietz, Eric Fontain, Bernhard Gruber, Annette v. Scholley-Pfab, Antje Senff, Natalie Stein. jcisd, 34(1):3-16, 1994. [doi]