| article html file updated | 8 February 2020 18:56 CET | Update | https://www.mdpi.com/2079-6439/5/4/39 |
| article html file updated | 27 September 2019 21:18 CEST | Update | N/A |
| article html file updated | 2 May 2019 20:09 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:32 CET | Update | N/A |
| article html file updated | 20 October 2017 07:17 CEST | Original file | N/A |
| article xml uploaded. | 20 October 2017 07:16 CEST | Update | https://www.mdpi.com/2079-6439/5/4/39/xml |
| article xml uploaded. | 20 October 2017 07:16 CEST | Update | N/A |
| article xml uploaded. | 20 October 2017 07:16 CEST | Original file | N/A |
| article pdf uploaded. | 20 October 2017 07:16 CEST | Updated version of record | https://www.mdpi.com/2079-6439/5/4/39/pdf |
| article pdf uploaded. | 19 October 2017 14:57 CEST | Version of Record | https://www.mdpi.com/2079-6439/5/4/39/pdf-vor |
