In the paper "Measuring Undocumented Migration" by Douglas S. Massey and Chiara Capoferro, the authors address the challenges involved in quantifying undocumented migration, an issue of significant importance in the field of migration studies. Here are the key points from the paper:
1. **Definitional Challenges**: The paper discusses the lack of a standardized definition of undocumented migration, which complicates measurement efforts. The