Penrosen portaat (Finnish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Penrosen portaat" in Finnish language version.

refsWebsite

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low place

low place

1web.archive.org

1^st place

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361^st place

doi.org

dx.doi.org

L.S. Penrose, R. Penrose: Impossible objects: A special type of visual illusion. British Journal of Psychology, 1958, 49. vsk, s. 31–33. PubMed:13536303. doi:10.1111/j.2044-8295.1958.tb00634.x..

nih.gov

pubmed.ncbi.nlm.nih.gov

L.S. Penrose, R. Penrose: Impossible objects: A special type of visual illusion. British Journal of Psychology, 1958, 49. vsk, s. 31–33. PubMed:13536303. doi:10.1111/j.2044-8295.1958.tb00634.x..

tu-dresden.de

psylux.psych.tu-dresden.de

Impossible Staircase psylux.psych.tu-dresden.de. Arkistoitu 30.6.2013. Viitattu 23.3.2016.

ucsd.edu

deutsch.ucsd.edu

Diana Deutsch: THe Paradox of Pitch Circularity. Acoustics Today, heinäkuu 2010. Artikkelin verkkoversio.

web.archive.org

Impossible Staircase psylux.psych.tu-dresden.de. Arkistoitu 30.6.2013. Viitattu 23.3.2016.

wired.com

The Never-Ending Stories: Inception‘s Penrose Staircase. Wired, 19.8.2010. Artikkelin verkkoversio.