Ronald T. Azuma (1997)
Presence - Teleoperators and Virtual Environments, 6(4), 355-385.
DOI: https://doi.org/10.1162/pres.1997.6.4.355
Abstract. Azuma's foundational AR survey defining the field — "AR supplements reality, rather than replacing it" — and the three characteristics (combines real and virtual, interactive in real time, registered in 3D). The reference cited in every AR-UX paper since.
Tags: software ar foundational survey