| article html file updated | 7 February 2020 19:58 CET | Update | https://www.mdpi.com/1999-4915/8/12/333 |
| article html file updated | 22 September 2019 13:23 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:30 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:49 CET | Update | N/A |
| article html file updated | 20 December 2016 09:42 CET | Original file | N/A |
| article xml uploaded. | 20 December 2016 09:41 CET | Update | https://www.mdpi.com/1999-4915/8/12/333/xml |
| article xml uploaded. | 20 December 2016 09:41 CET | Original file | N/A |
| article pdf uploaded. | 20 December 2016 09:41 CET | Version of Record | https://www.mdpi.com/1999-4915/8/12/333/pdf |
