| article html file updated | 8 February 2020 14:24 CET | Update | https://www.mdpi.com/1999-4907/8/9/304 |
| article html file updated | 26 September 2019 17:40 CEST | Update | - |
| article html file updated | 3 May 2019 05:18 CEST | Update | - |
| article html file updated | 30 September 2017 10:26 CEST | Update | - |
| article html file updated | 24 August 2017 16:18 CEST | Original file | - |
| article xml uploaded. | 24 August 2017 16:17 CEST | Original file | https://www.mdpi.com/1999-4907/8/9/304/xml |
| article pdf uploaded. | 24 August 2017 16:17 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/304/pdf |
