01069naa a2200217 a 450000100080000000500110000800800410001910000180006024500660007826000090014452004780015365000150063165300120064665300240065865300190068265300220070165300350072365300150075865300100077377300680078317876381996-03-01       1980    bl ---       0--  u    #d1 aSPENCE, A. M.  aNotes on advertising, economies of scale, and entry barriers.  c1980  aThe paper discusses how adversiting and economies of scale in production interact to produce economies of scale. The latter are defined to occur when costs per dollar of re- venues decline with revenues. It is argued that, in an industry whith differentiated product and advertising, it is the declining costs per collar of revenues rather than declining produ- ction costs per unit of output that directly affects entry barriers and the profitability of established firms.  aProdução  aBalanca  aBarreira de entrada  aEntry barriers  aNotas em economia  aNotes on adversiting economies  aProduction  aScale  tQuarterly Journal of Economicsgv.95, n.2, p.493-507, Nov.1980.