| article html file updated | 7 February 2020 08:05 CET | Update | https://www.mdpi.com/2075-4426/6/2/15 |
| article html file updated | 5 May 2019 16:59 CEST | Update | - |
| article html file updated | 27 March 2019 03:32 CET | Update | - |
| article html file updated | 5 July 2016 04:44 CEST | Update | - |
| article html file updated | 2 May 2016 09:13 CEST | Original file | - |
| article xml uploaded. | 2 May 2016 09:12 CEST | Original file | https://www.mdpi.com/2075-4426/6/2/15/xml |
| article pdf uploaded. | 2 May 2016 09:12 CEST | Version of Record | https://www.mdpi.com/2075-4426/6/2/15/pdf |
