계영배 (Korean Wikipedia)

Analysis of information sources in references of the Wikipedia article "계영배" in Korean language version.

refsWebsite

Global rank Korean rank

1skullsinthestars.com

low place

low place

1books.google.com

3^rd place

9^th place

1epmagazine.org

low place

low place

books.google.com

Ewbank, Thomas (1842). A Descriptive and Historical Account of Hydraulic and Other Machines for Raising Water, Ancient and Modern: With Observations on Various Subjects Connected with the Mechanic Arts: Including the Progressive Development of the Steam Engine. In Five Books. D. Appleton & Company. 582쪽.

epmagazine.org

“Pythagorean cup - The Theory”. EP Magazine. 2008. 2015년 1월 30일에 확인함.

skullsinthestars.com

“Physics demonstrations: the Pythagoras cup”. 《skullinthestars.com》. 2012년 4월 26일. 2015년 1월 30일에 확인함.