| article html file updated | 7 February 2020 20:25 CET | Update | https://www.mdpi.com/2071-1050/9/1/34 |
| article html file updated | 22 September 2019 15:49 CEST | Update | N/A |
| article html file updated | 4 May 2019 17:35 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:44 CET | Update | N/A |
| article html file updated | 28 December 2016 08:56 CET | Original file | N/A |
| article xml uploaded. | 28 December 2016 08:45 CET | Original file | https://www.mdpi.com/2071-1050/9/1/34/xml |
| article pdf uploaded. | 28 December 2016 08:45 CET | Version of Record | https://www.mdpi.com/2071-1050/9/1/34/pdf |
