About: http://webisa.webdatacommons.org/116457044

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	uni-graz.at/~gronau/monthly230-237.pdf is a newer paper discussing the analytic continuation of the Theodorus spiral.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net