| article html file updated | 8 February 2020 05:08 CET | Update | https://www.mdpi.com/2413-8851/1/2/14 |
| article html file updated | 3 May 2019 23:23 CEST | Update | - |
| article html file updated | 23 May 2017 03:45 CEST | Update | - |
| article html file updated | 5 May 2017 14:34 CEST | Original file | - |
| article xml uploaded. | 5 May 2017 14:32 CEST | Original file | https://www.mdpi.com/2413-8851/1/2/14/xml |
| article pdf uploaded. | 5 May 2017 14:32 CEST | Version of Record | https://www.mdpi.com/2413-8851/1/2/14/pdf |
