1. Alvorada Programme: Providing security of tenure for the poor;AVSI,1995
2. Digital ortho-images — A powerful tool for the extraction of spatial- and geo-information;Baltsavias;ISPRS Journal of Photogrammetry and Remote Sensing,1996
3. Automated shack reconstruction using integration of cues in object space;Baltsavias;International archives of photogrammetry and remote sensing,1997
4. Use of DTMs/DSMs and orthoimages to support building extraction;Baltsavias,1995
5. Experiences in monitoring land ownership in informal settlements using low-cost imaging techniques;Barry,1997