
| EDITORIAL NOTE |
| MULTI-PRODUCT FIRMS VS SINGLE-PRODUCT FIRMS: THE THEORY OF COST AND PRODUCTION (†) |
| CONSIDERAZIONI SU UN CRITERIO DI SCELTA FRA INVESTIMENTI ALEATORI (†) |
| MODEL OF DECISION MAKING UNDER RISK Bertil Naslund, Andrew Whinston |
| PROOF OF PROFESSOR SAMUELSON'S CONJECTURE ON THE STABILITY |
| ERRATA |