1. B. Crichton, Informally Speaking (newsletter from Perstorp Formox, ), spring/summer 2003, pp. 12–13.
2. B. Crichton, Informally Speaking (newsletter from Perstorp Formox, ), spring/summer 2006, p. 8.
3. B. Crichton, Informally Speaking (newsletter from Perstorp Formox, ), autumn/winter 2009, pp. 4–5.
4. THE OXIDATION OF METHANOL WITH AIR OVER IRON, MOLYBDENUM, AND IRON-MOLYBDENUM OXIDES