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Eilutė 161: == Šaltiniai == {{Išnašos}} * :12.{{cite book \|title=A Book of Curves\|first=E.H.\|last=Lockwood\|publisher=Cambridge\|year=1961 \|chapter=Chapter 13: The Tractrix and Catenary\|url=http://www.archive.org/details/bookofcurves006299mbp}} * :13.{{cite book\|last=Salmon\|first=George \| title=Higher Plane Curves \|publisher=Hodges, Foster and Figgis\|year=1879\|pages=287–289 }} * :14.{{cite book\| last = Routh\| first = Edward John\| authorlink = Edward Routh\| title = A Treatise on Analytical Statics\| url = http://books.google.com/?id=3N5JAAAAMAAJ&pg=PA315\| year = 1891\| publisher = University Press\| chapter = Chapter X: On Strings }}Weisstein, Eric W., „Catenary“, MathWorld * Weisstein, Eric W., „Catenary“, MathWorld [[Kategorija:Kreivės]]

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