| article html file updated | 7 February 2020 21:11 CET | Update | https://www.mdpi.com/2071-1050/9/1/89 |
| article html file updated | 22 September 2019 19:57 CEST | Update | - |
| article html file updated | 4 May 2019 15:56 CEST | Update | - |
| article html file updated | 7 February 2017 10:10 CET | Update | - |
| article html file updated | 11 January 2017 15:53 CET | Original file | - |
| article xml uploaded. | 11 January 2017 15:51 CET | Original file | https://www.mdpi.com/2071-1050/9/1/89/xml |
| article pdf uploaded. | 11 January 2017 15:51 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/89/pdf |
