| article html file updated | 8 February 2020 12:53 CET | Update | https://www.mdpi.com/1999-4907/8/8/284 |
| article html file updated | 26 September 2019 09:18 CEST | Update | - |
| article html file updated | 3 May 2019 08:15 CEST | Update | - |
| article html file updated | 27 March 2019 19:28 CET | Update | - |
| article html file updated | 30 August 2017 09:32 CEST | Update | - |
| article html file updated | 5 August 2017 10:29 CEST | Original file | - |
| article xml uploaded. | 5 August 2017 10:27 CEST | Original file | https://www.mdpi.com/1999-4907/8/8/284/xml |
| article pdf uploaded. | 5 August 2017 10:27 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/8/284/pdf |
