Issue No.06 - November/December (1984 vol.4)
Theodore Williams , Purdue Laboratory for Applied Industrial Control Purdue University
Hierarchical organization and distributed computing capability are the keys to the highly fault-tolerant, plant-wide control and management systems users demand today.
Theodore Williams, "The Development of Reliabililty in Industrial Control Systems", IEEE Micro, vol.4, no. 6, pp. 66-80, November/December 1984, doi:10.1109/MM.1984.291282