Behrisch, Michael; Krueger, Robert (2018). Visual Pattern-Driven Exploration of Big Data (Report). Germany: IEEE. pp. 1–11. arXiv:1807.01364. doi:10.1109/BDVA.2018.8534028.
Srinika Jayaratne, Rona L. Levy (1979) "Empirical Clinical Practice", ISBN0-231-04188-8, p. 110
Hans-Jürgen Zimmermann (2001) "Fuzzy Set Theory--and Its Applications", ISBN0-7923-7435-5, p. 278
"Contemporary Geodesy" (Proceedings of a Conference Held at the Harvard College Observatory - Smithsonian Astrophysical Observatory, Cambridge, MA, December 1–2, 1958). P. 68 says: "Now the first type of optical tracking, the most elementary, is that using merely the naked eye — as I heard a Navy man say the other day, 'Mark I eyeball' ".
J. W. Schoonahd; J. D. Gould; L. A. Miller (July 1973), "Studies of Visual Inspection", Ergonomics, 16 (4), Taylor & Francis: 365–379, doi:10.1080/00140137308924528, PMID28086275
Hrymak, Victor; Vries, Jam (2019). "The development and trial of systematic visual search: a visual inspection method designed to improve current workplace risk assessment practice". Policy and Practice in Health and Safety. 18 (1). Taylor & Francis: 9–24. doi:10.1080/14773996.2019.1708615.
Behrisch, Michael; Krueger, Robert (2018). Visual Pattern-Driven Exploration of Big Data (Report). Germany: IEEE. pp. 1–11. arXiv:1807.01364. doi:10.1109/BDVA.2018.8534028.
J. W. Schoonahd; J. D. Gould; L. A. Miller (July 1973), "Studies of Visual Inspection", Ergonomics, 16 (4), Taylor & Francis: 365–379, doi:10.1080/00140137308924528, PMID28086275