M 0 r gen s t ern, Oskar: The..-Oompressib;
Jjty of economic-systems and the problem 
of economic const~~ts 

in -, 

tiiiiie:i.t und VieJ.falt :i..n den Sozialmsams"
htl~ten. Pestsohri1't f .JU.0mIlldmo ~o 

1966y s. 190 ff.