Last week, the 9th edition of WER was held in Rio de Janeiro.
WER is a workshop designed to discuss requirements engineering (RE) in the ibero-american context, and uses three different languages (Portuguese, Spanish and English).
One of the main characteristics of WER is its open acess digital library, WERpapers.
There, you will be able to find peer reviewed articles in several RE topics. Most of the material is in Spanish or Portuguese, but some are in English.
Another useful resource of peer reviewed material is the Time Constrained Requirements Engineering (TCRE) workshop held at RE´02. It is also open acess.