| article html file updated | 7 February 2020 19:51 CET | Update | https://www.mdpi.com/1999-4915/8/12/331 |
| article html file updated | 22 September 2019 12:45 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:43 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:48 CET | Update | N/A |
| article html file updated | 17 December 2016 10:46 CET | Original file | N/A |
| article xml uploaded. | 17 December 2016 10:45 CET | Original file | https://www.mdpi.com/1999-4915/8/12/331/xml |
| article pdf uploaded. | 17 December 2016 10:45 CET | Version of Record | https://www.mdpi.com/1999-4915/8/12/331/pdf |
