| article html file updated | 23 February 2021 07:29 CET | Update | https://www.mdpi.com/2079-3200/5/2/15 |
| article html file updated | 8 February 2020 03:32 CET | Update | - |
| article html file updated | 24 September 2019 07:26 CEST | Update | - |
| article html file updated | 4 May 2019 02:18 CEST | Update | - |
| article html file updated | 14 April 2017 10:23 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 10:21 CEST | Original file | https://www.mdpi.com/2079-3200/5/2/15/xml |
| article pdf uploaded. | 14 April 2017 10:21 CEST | Updated version of record | https://www.mdpi.com/2079-3200/5/2/15/pdf |
| article pdf uploaded. | 13 April 2017 12:34 CEST | Version of Record | https://www.mdpi.com/2079-3200/5/2/15/pdf-vor |
