| article html file updated | 8 February 2020 05:19 CET | Update | https://www.mdpi.com/2310-2861/3/2/18 |
| article html file updated | 24 September 2019 17:07 CEST | Update | - |
| article html file updated | 3 May 2019 23:03 CEST | Update | - |
| article html file updated | 23 May 2017 03:51 CEST | Update | - |
| article html file updated | 8 May 2017 15:38 CEST | Original file | - |
| article xml uploaded. | 8 May 2017 15:36 CEST | Original file | https://www.mdpi.com/2310-2861/3/2/18/xml |
| article pdf uploaded. | 8 May 2017 15:36 CEST | Version of Record | https://www.mdpi.com/2310-2861/3/2/18/pdf |
