- CSB - MetaPress - Google - Bing - Yahoo
 | 2008 | |
|---|---|---|
| 1 |      | Yvonne Michael, Erin M. McGregor, James Allen, Stephen Fickas: Observing Outdoor Activity Using Global Positioning System-Enabled Cell Phones. ICOST 2008: 177-184 |
| 1 | James Allen | [1] |
| 2 | Stephen Fickas | [1] |
| 3 | Erin M. McGregor | [1] |