| article html file updated | 8 February 2020 10:29 CET | Update | https://www.mdpi.com/2078-1547/8/2/15 |
| article html file updated | 3 May 2019 13:20 CEST | Update | - |
| article html file updated | 10 July 2017 03:45 CEST | Original file | - |
| article xml uploaded. | 10 July 2017 03:43 CEST | Original file | https://www.mdpi.com/2078-1547/8/2/15/xml |
| article pdf uploaded. | 10 July 2017 03:43 CEST | Updated version of record | https://www.mdpi.com/2078-1547/8/2/15/pdf |
| article pdf uploaded. | 8 July 2017 10:06 CEST | Updated version of record | https://www.mdpi.com/2078-1547/8/2/15/pdf-vor |
| article pdf uploaded. | 8 July 2017 10:05 CEST | Version of Record | https://www.mdpi.com/2078-1547/8/2/15/pdf-vor |
