References
Mogens Blegvad
(1989). Vienna, Warsaw, Copenhagen. In K. Szaniawski (Ed.). The Vienna circle and the Lvov-Warsaw school (pp. 1-8). Dordrecht: Springer.
(1977). Competing and complementary patterns of explanation in social science. In R. E. Butts, & J. Hintikka (Eds.). Historical and philosophical dimensions of logic, methodology and philosophy of science (pp. 129-158). Dordrecht: Springer.