| article html file updated | 23 February 2021 07:30 CET | Update | https://www.mdpi.com/2079-3200/5/2/20 |
| article html file updated | 8 February 2020 05:47 CET | Update | - |
| article html file updated | 24 September 2019 19:35 CEST | Update | - |
| article html file updated | 3 May 2019 22:11 CEST | Update | - |
| article html file updated | 23 May 2017 04:11 CEST | Update | - |
| article html file updated | 13 May 2017 10:35 CEST | Original file | - |
| article xml uploaded. | 13 May 2017 10:33 CEST | Original file | https://www.mdpi.com/2079-3200/5/2/20/xml |
| article pdf uploaded. | 13 May 2017 10:33 CEST | Version of Record | https://www.mdpi.com/2079-3200/5/2/20/pdf |
