00415 a2200121 4500001001000000005001700010008004100027245009300068100002300161700002500184773006700209999001700276ART_1259820260410161907.0260409a 10aA synthesis of Keynesian, monetary, and portfolio approaches to flexible exchanges rates1 aHelliwell, John F.1 aGylfason, Thorvaldur0 tThe Economic Journalg- Vol. 93, NÂș 372 (dic. 1983)wREV12512 c26493d26493