| article html file updated | 8 February 2020 18:17 CET | Update | https://www.mdpi.com/2073-4360/9/10/502 |
| article html file updated | 27 September 2019 17:18 CEST | Update | - |
| article html file updated | 2 May 2019 21:40 CEST | Update | - |
| article html file updated | 1 November 2017 02:40 CET | Update | - |
| article html file updated | 12 October 2017 17:59 CEST | Original file | - |
| article xml uploaded. | 12 October 2017 17:58 CEST | Update | https://www.mdpi.com/2073-4360/9/10/502/xml |
| article xml uploaded. | 12 October 2017 17:58 CEST | Original file | - |
| article pdf uploaded. | 12 October 2017 17:58 CEST | Version of Record | https://www.mdpi.com/2073-4360/9/10/502/pdf |
