| article html file updated | 8 February 2020 08:11 CET | Update | https://www.mdpi.com/2073-4352/7/6/172 |
| article html file updated | 25 September 2019 07:48 CEST | Update | - |
| article html file updated | 3 May 2019 17:40 CEST | Update | - |
| article html file updated | 30 June 2017 22:45 CEST | Update | - |
| article html file updated | 13 June 2017 13:24 CEST | Original file | - |
| article xml uploaded. | 13 June 2017 13:23 CEST | Update | https://www.mdpi.com/2073-4352/7/6/172/xml |
| article pdf uploaded. | 13 June 2017 13:23 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/6/172/pdf |
