SILVA, César Roberto Leite da  <br/><br/>
Preços mínimos e estabilização de preços agrícolas 

 - São Paulo :  Nobel,  jan./mar. 1993 
<br/><br/> This work analyses the minimum price policy in Brazil. Some measures of price spread are performed in monthly prices time-series to estimate the impact of the policy on the series of rice and com. The results suggest that changes in thc price policy would not modify thc historica1 performance of the price time-series for these crops, except the case of the intervention prices that has worked since 1988