| article html file updated | 7 February 2020 19:16 CET | Update | https://www.mdpi.com/1999-4907/7/12/311 |
| article html file updated | 22 September 2019 09:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:57 CEST | Update | N/A |
| article html file updated | 27 December 2016 11:45 CET | Update | N/A |
| article html file updated | 8 December 2016 08:53 CET | Original file | N/A |
| article xml uploaded. | 8 December 2016 08:51 CET | Original file | https://www.mdpi.com/1999-4907/7/12/311/xml |
| article pdf uploaded. | 8 December 2016 08:51 CET | Version of Record | https://www.mdpi.com/1999-4907/7/12/311/pdf |
