| article html file updated | 8 February 2020 02:38 CET | Update | https://www.mdpi.com/2071-1050/9/4/536 |
| article html file updated | 24 September 2019 02:29 CEST | Update | - |
| article html file updated | 4 May 2019 04:11 CEST | Update | - |
| article html file updated | 28 April 2017 10:52 CEST | Update | - |
| article html file updated | 1 April 2017 08:44 CEST | Original file | - |
| article xml uploaded. | 1 April 2017 08:42 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/536/xml |
| article pdf uploaded. | 1 April 2017 08:42 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/536/pdf |
| article pdf uploaded. | 31 March 2017 16:21 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/536/pdf-vor |
