| article html file updated | 23 February 2021 07:41 CET | Update | https://www.mdpi.com/2079-3200/6/4/52 |
| article html file updated | 11 February 2020 01:31 CET | Update | - |
| article html file updated | 27 April 2019 23:05 CEST | Update | - |
| article html file updated | 13 April 2019 18:57 CEST | Update | - |
| article html file updated | 2 April 2019 08:35 CEST | Update | - |
| article html file updated | 6 December 2018 08:07 CET | Original file | - |
| article pdf uploaded. | 6 December 2018 08:06 CET | Version of Record | https://www.mdpi.com/2079-3200/6/4/52/pdf |
| article xml uploaded. | 6 December 2018 08:06 CET | Update | https://www.mdpi.com/2079-3200/6/4/52/xml |
| article xml file uploaded | 6 December 2018 08:06 CET | Original file | - |
