| article html file updated | 7 February 2020 22:59 CET | Update | https://www.mdpi.com/2071-1050/9/2/231 |
| article html file updated | 23 September 2019 05:46 CEST | Update | N/A |
| article html file updated | 4 May 2019 12:03 CEST | Update | N/A |
| article html file updated | 1 March 2017 10:32 CET | Update | N/A |
| article html file updated | 9 February 2017 12:44 CET | Original file | N/A |
| article xml uploaded. | 9 February 2017 12:42 CET | Update | https://www.mdpi.com/2071-1050/9/2/231/xml |
| article xml uploaded. | 9 February 2017 12:42 CET | Update | N/A |
| article xml uploaded. | 9 February 2017 12:42 CET | Original file | N/A |
| article pdf uploaded. | 9 February 2017 12:42 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/231/pdf |
