00278nam a2200121Ia 4500082001900000100001700019245004700036260000900083300001400092490001500106490003000121500000500151  a330.183 B334b  aBator, F. M.  aSimple analytics of welfare maximizationb  c1957  app. 22-59  vMarch 1957  aAmerican Economic Review   a