| article html file updated | 7 February 2020 14:54 CET | Update | https://www.mdpi.com/1999-4907/7/9/202 |
| article html file updated | 5 May 2019 04:14 CEST | Update | - |
| article html file updated | 28 September 2016 07:21 CEST | Update | - |
| article html file updated | 13 September 2016 12:52 CEST | Original file | - |
| article xml uploaded. | 13 September 2016 12:51 CEST | Update | https://www.mdpi.com/1999-4907/7/9/202/xml |
| article xml uploaded. | 13 September 2016 12:51 CEST | Original file | - |
| article pdf uploaded. | 13 September 2016 12:51 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/9/202/pdf |
