Citation: Lightfoot, P.; Pei, S.; Jorgensen, J. D.; Yamada, Y.; Matsumoto, T.; Izumi, F.; Kodama, Y. (1991). Redetermination of the structure of the 80 K superconductor YBa~2~Cu~4~O~8~ by time-of-flight neutron powder diffraction. Acta Crystallographica Section C, 47, pp. 1143-1145.