| article html file updated | 8 February 2020 02:08 CET | Update | https://www.mdpi.com/2071-1050/9/4/461 |
| article html file updated | 23 September 2019 23:44 CEST | Update | - |
| article html file updated | 4 May 2019 05:15 CEST | Update | - |
| article html file updated | 28 April 2017 10:41 CEST | Update | - |
| article html file updated | 27 March 2017 05:30 CEST | Update | - |
| article html file updated | 24 March 2017 02:43 CET | Original file | - |
| article xml uploaded. | 24 March 2017 02:42 CET | Original file | https://www.mdpi.com/2071-1050/9/4/461/xml |
| article pdf uploaded. | 24 March 2017 02:42 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/461/pdf |
