“...We study the effects of grade retention on secondary school performance by considering a change in Colombia's educative legislation. In 2010, the rule that...”

“...We study the effects of grade retention on secondary school performance by considering a change in Colombia’s educative legislation. In 2010, the rule that...”

“...We study the effects of grade retention on secondary school performance by considering a change in Colombia's educative legislation. In 2010, the rule that...”

“...Recent findings in theoretical search monetary models not only allow greater understanding of the exchange process as a monetary phenomena, but give answers to...”

“...Los modelos de búsqueda monetaria, gracias a los trabajos teóricos recientes, no sólo permiten entender el intercambio como un fenómeno monetario, sino también...”