Lorenzen, Karl Richard Pavlovic (Translator), Constructive Philosophy, The University of Massachusetts Press, Amherst, 1987. References Wilhelm Kamlah, Paul Lorenzen, Logical Propaedeutic: Pre-School of Reasonable Discourse, Washington, D.C.: University Press of America, 1984. Diane Loring Souvaine, Paul Lorenzen and Constructive Mathematics, 1980. External links Books from and about Lorenzen at Deutsche National Bibliothek 1915 births 1994 deaths 20th-century German mathematicians 20th-century German philosophers Continental philosophers German logicians Proof theorists Philosophers of language University of Bonn alumni German male writers Relativity critics