Faktencheck Nachhaltigkeit
Thomas Unnerstall
Circle Inversions - fun with a serious undertone (Essay)
Kees van der Laan
Professor Stewart's Incredible Numbers
Ian Nicholas Stewart
Philosophy of Logic
Dale Jacquette
Higher-Order Algebra, Logic, and Term Rewriting: First International ...
Jan Heering & Karl Meinke & Bernhard Möller & Tobias Nipkow
The Austrian Theory of the Trade Cycle and Other Essays
Ludwig von Mises
Epistemological Problems of Economics