| article html file updated | 7 February 2020 15:58 CET | Update | https://www.mdpi.com/1999-4915/8/10/271 |
| article html file updated | 5 May 2019 02:20 CEST | Update | - |
| article html file updated | 31 October 2016 06:47 CET | Update | - |
| article html file updated | 11 October 2016 12:19 CEST | Original file | - |
| article xml uploaded. | 11 October 2016 12:17 CEST | Original file | https://www.mdpi.com/1999-4915/8/10/271/xml |
| article pdf uploaded. | 11 October 2016 12:17 CEST | Updated version of record | https://www.mdpi.com/1999-4915/8/10/271/pdf |
| article pdf uploaded. | 4 October 2016 10:57 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/10/271/pdf-vor |
