| article html file updated | 9 February 2020 05:16 CET | Update | https://www.mdpi.com/2310-2861/4/1/15 |
| article html file updated | 30 September 2019 11:08 CEST | Update | - |
| article html file updated | 1 May 2019 21:32 CEST | Update | - |
| article html file updated | 17 April 2019 20:23 CEST | Update | - |
| article html file updated | 28 March 2019 20:23 CET | Update | - |
| article html file updated | 2 February 2018 08:41 CET | Original file | - |
| article xml uploaded. | 2 February 2018 08:40 CET | Update | https://www.mdpi.com/2310-2861/4/1/15/xml |
| article xml uploaded. | 2 February 2018 08:40 CET | Original file | - |
| article pdf uploaded. | 2 February 2018 08:40 CET | Version of Record | https://www.mdpi.com/2310-2861/4/1/15/pdf |
