1. in Computer Control of Fermentation Processes (Proc. Labex Symp. Labex Int. 1971, Earls Court, London), Fermentation Design Inc., Allentown, Pa., 1971, p. 1.
2. in Computer Control of Fermentation Processes. (Proc. Labex Symp. Labex Int.1971, Earls Court, London), Fermentation Design Inc., Allentown, Pa., 1971, p. 16.
3. in The First European conference on computer Process Control Fermentation, Institut National de la Recherche Agronomique, Dijon, France, 1973, p. 1.