Additional
Information: A prominent group of scientists and philosophers who met regularly in Vienna from 1922 to 1936. Their approach came to be termed "logical positivism."
Wikipedia: Vienna Circle Wikipedia: Vienna Circle: Article from this openly-edited encyclopedia. (Vienna Circle) http://www.wikipedia.org/wiki/Vienna_Circle
Vienna Circle Foundation Vienna Circle Foundation: Dutch institute promoting studies in the tradition of the Circle. Features concise information on past events and the disposition of the Circle archives. (Vienna Circle) http://soliton.wins.uva.nl/~kox/wks/wks.html
Institute Vienna Circle Institute Vienna Circle: Dedicated to continuing the Circle's work in the philosophy of science. In German and English. (Vienna Circle) http://www.univie.ac.at/ivc/