Немогући објекат (Serbian Wikipedia)
Analysis of information sources in references of the Wikipedia article "Немогући објекат" in Serbian language version.
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anopticalillusion.com
- Honeycutt, Brad (9. 3. 2012). „Impossible Elephant”. anopticalillusion.com. Приступљено 11. 3. 2019. „..one of the most famous and classic optical illusions of all time. While most people know it simply as the "impossible elephant", the actual title of the work is "L’egs-istential Quandary".”
archive.org
- Seckel, Al (2004). Masters of Deception: Escher, Dalí & the Artists of Optical Illusion
. Sterling Publishing Company. стр. 261. ISBN 1402705778.
books.google.com
- Barrow, John D (1999). Impossibility: The Limits of Science and the Science of Limits. Oxford University Press. стр. 14. ISBN 9780195130829.
doi.org
- Aigner, Martin; Ziegler, Günter M. (2018). „Chapter 15: The Borromean Rings Don't Exist”. Proofs from THE BOOK (6th изд.). Springer. стр. 99—106. ISBN 978-3-662-57265-8. doi:10.1007/978-3-662-57265-8_15.
- Penrose, LS; Penrose, R. (1958). „Impossible objects: A special type of optical illusion”. British Journal of Psychology. 49 (1): 31—33. PMID 13536303. doi:10.1111/j.2044-8295.1958.tb00634.x.
fink.com
- „Impossible Figures in Perceptual Psychology”. Fink.com. Приступљено 11. 2. 2014.
nih.gov
ncbi.nlm.nih.gov
- Penrose, LS; Penrose, R. (1958). „Impossible objects: A special type of optical illusion”. British Journal of Psychology. 49 (1): 31—33. PMID 13536303. doi:10.1111/j.2044-8295.1958.tb00634.x.
uwa.edu.au
csse.uwa.edu.au
- Khoh, Chih W.; Kovesi, Peter (фебруар 1999). „Animating Impossible Objects”. Архивирано из оригинала 28. 5. 2015. г. Приступљено 10. 2. 2014.
web.archive.org
- Khoh, Chih W.; Kovesi, Peter (фебруар 1999). „Animating Impossible Objects”. Архивирано из оригинала 28. 5. 2015. г. Приступљено 10. 2. 2014.