| Views | |
| Acoustic detection of underwater targets | 145 |
| tammikuu 2013 | helmikuu 2013 | maaliskuu 2013 | huhtikuu 2013 | toukokuu 2013 | |
| Acoustic detection of underwater targets | 38 | 26 | 23 | 32 | 26 |
| Views | |
| United States of America | 80 |
| Canada | 25 |
| China | 23 |
| Finland | 4 |
| United Kingdom | 3 |
| Russian Federation | 3 |
| Italy | 2 |
| Malta | 2 |
| Germany | 1 |
| Hong Kong | 1 |
| Views | |
| Redwood City | 33 |
| Toronto | 25 |
| Beijing | 16 |
| Sayreville | 9 |
| Santa Clara | 5 |
| Caernarfon | 3 |
| Tampere | 3 |
| Davis | 2 |
| Henan | 2 |
| Melita | 2 |