| article html file updated | 7 February 2020 21:02 CET | Update | https://www.mdpi.com/2073-8994/9/1/8 |
| article html file updated | 22 September 2019 19:22 CEST | Update | N/A |
| article html file updated | 4 May 2019 16:14 CEST | Update | N/A |
| article html file updated | 7 February 2017 04:22 CET | Update | N/A |
| article html file updated | 9 January 2017 08:58 CET | Original file | N/A |
| article xml uploaded. | 9 January 2017 08:56 CET | Update | https://www.mdpi.com/2073-8994/9/1/8/xml |
| article pdf uploaded. | 9 January 2017 08:56 CET | Version of Record | https://www.mdpi.com/2073-8994/9/1/8/pdf |
