"National Bureau of Economic Research" . . "National Bureau of Economic Research." . "Arbitraje (Economía)" . . "Arbitragegeschäft / Theorie." . . "APT." . . . . . . . . "The limits of arbitrage" . "The limits of arbitrage"@en . . . . . . . . . . . . . . . . "The Limits of Arbitrage" . . "The Limits of Arbitrage"@en . . . . . . . . . . . . . . "værdipapirer, investering." . . . . "Arbitrage." . . "Arbitraje comercial." . . "Aandelen." . .