| article html file updated | 7 February 2020 23:21 CET | Update | https://www.mdpi.com/1999-4907/8/2/43 |
| article html file updated | 23 September 2019 07:42 CEST | Update | - |
| article html file updated | 4 May 2019 11:20 CEST | Update | - |
| article html file updated | 28 February 2017 10:55 CET | Update | - |
| article html file updated | 14 February 2017 11:45 CET | Original file | - |
| article xml uploaded. | 14 February 2017 11:27 CET | Original file | https://www.mdpi.com/1999-4907/8/2/43/xml |
| article pdf uploaded. | 14 February 2017 11:27 CET | Version of Record | https://www.mdpi.com/1999-4907/8/2/43/pdf |
