+@InCollection{newt1670,
+ author = "Isaac Newton",
+ year = "1670--71?",
+ title = "Tractatus de Methodis Serierum et Fluxionum",
+ booktitle = "The Mathematical Papers of Isaac Newton, III",
+ editor = "D. T. Whiteside",
+ pages = "32--353",
+ publisher = "Cambridge University Press, Cambridge",
+ kwds = "na, history, Newton's method",
+}x
+
+@Book{Cardano15,
+ author = "Girolamo Cardano",
+ title = "Ars Magna or The Rules of Algebra, 1545",
+ editor = "T. Richard Witmer",
+ publisher = "MIT",
+ year = "1968",
+}x
+
+@Article{NH-Abel26,
+ title = "Beweis der Unmöglichkeit, algebraische Gleichungen von höheren Graden als dem vierten allgemein aufzulösen",
+ journal = "J. reine angew, Math",
+ volume = "1",
+ number = "1",
+ pages = "65--84",
+ year = "1826",
+ author = "Niels Henrik Abel",
+
+}x
+
+
