Correia, R. M. & Guerreiro, R. (2019). The roots of 4IR in architecture: A military drawing machine used for space perception in architecture. In Souza, J. P., Henriques, G. C., and Xavier, J. P. (Ed.), Proceedings of 37 eCAADe and XXIII SIGraDi Joint Conference, “Architecture in the Age of the 4Th Industrial Revolution”. (pp. 397-406). Porto: Blucher.