00409nam a2200121 a 450000500170000002000150001708200170003210000060004911000240005524501390007926000480021830000210026620251203090512.0  a0521312663  a330.01,badv  d_  aHildenbrand, Werner  aAdvances in economic theory: invited papers for the foutth world congress of the econometric society at Aix-En-Provence,September 1980  aCambridge: Cambridge University Pressc1985  axii, 285p.c22cm