| article html file updated | 7 February 2020 21:41 CET | Update | https://www.mdpi.com/2071-1050/9/1/129 |
| article html file updated | 22 September 2019 22:33 CEST | Update | - |
| article html file updated | 4 May 2019 14:44 CEST | Update | - |
| article html file updated | 7 February 2017 10:19 CET | Update | - |
| article html file updated | 18 January 2017 08:58 CET | Original file | - |
| article xml uploaded. | 18 January 2017 08:57 CET | Original file | https://www.mdpi.com/2071-1050/9/1/129/xml |
| article pdf uploaded. | 18 January 2017 08:57 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/129/pdf |
