| article html file updated | 8 February 2020 05:01 CET | Update | https://www.mdpi.com/2310-2861/3/2/15 |
| article html file updated | 3 May 2019 23:35 CEST | Update | - |
| article html file updated | 23 May 2017 03:37 CEST | Update | - |
| article html file updated | 5 May 2017 12:28 CEST | Update | - |
| article xml uploaded. | 5 May 2017 12:26 CEST | Update | https://www.mdpi.com/2310-2861/3/2/15/xml |
| article pdf uploaded. | 5 May 2017 12:26 CEST | Updated version of record | https://www.mdpi.com/2310-2861/3/2/15/pdf |
| article html file updated | 4 May 2017 14:14 CEST | Original file | - |
| article pdf uploaded. | 4 May 2017 14:13 CEST | Version of Record | https://www.mdpi.com/2310-2861/3/2/15/pdf-vor |
