The DEROB System Volume II, Notes About the Programs, Tailored Edition for DEROB-NBRI 2.0, by F.S. Higgs, Passive Solar Heating Group, National Building Research Institute Council for Scientific and Industrial Research, revised from Explanatory Notes and Theory (Volume II) by F.N. Arumi, 1983 November

The DEROB System Volume II, Notes About the Programs, Tailored Edition for DEROB-NBRI 2.0, by F.S. Higgs, Passive Solar Heating Group, National Building Research Institute Council for Scientific and Industrial Research, revised from Explanatory Notes and Theory (Volume II) by F.N. Arumi, 1983 November, Box: ARUMI012, item: 8. Francisco Arumí-Noe collection, ARUMI. Alexander Architectural Archives. https://archives.lib.utexas.edu/repositories/2/archival_objects/86408 Accessed September 27, 2026.