lectures given at the 3rd session of the Centro Internazionale Matematico Estivo (C.I.M.E.) held in bressanone, Italy, July 8-13, 1996 Biais, B. creator Jouini,E. Bjork,T. Cvitanic, J. El Karoui,N. New York Springer 1997 1997 eng Eng lis h vi, 316p. 24cm. Financial economics Market Mechanism Equilibrium 332.0151 FIN 3540626425 9783540626428 190328