| article html file updated | 7 February 2020 15:45 CET | Update | https://www.mdpi.com/1999-5903/8/4/48 |
| article html file updated | 5 May 2019 02:43 CEST | Update | - |
| article html file updated | 29 September 2016 10:18 CEST | Original file | - |
| article xml uploaded. | 29 September 2016 09:05 CEST | Update | https://www.mdpi.com/1999-5903/8/4/48/xml |
| article xml uploaded. | 29 September 2016 09:05 CEST | Update | - |
| article xml uploaded. | 29 September 2016 09:05 CEST | Update | - |
| article xml uploaded. | 29 September 2016 09:05 CEST | Original file | - |
| article pdf uploaded. | 29 September 2016 09:05 CEST | Version of Record | https://www.mdpi.com/1999-5903/8/4/48/pdf |
