| article html file updated | 7 February 2020 22:33 CET | Update | https://www.mdpi.com/2071-1050/9/2/202 |
| article html file updated | 4 May 2019 12:57 CEST | Update | N/A |
| article html file updated | 1 March 2017 10:28 CET | Update | N/A |
| article html file updated | 13 February 2017 10:24 CET | Original file | N/A |
| article xml uploaded. | 13 February 2017 10:23 CET | Original file | https://www.mdpi.com/2071-1050/9/2/202/xml |
| article pdf uploaded. | 13 February 2017 10:23 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/202/pdf |
| article pdf uploaded. | 1 February 2017 11:04 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/202/pdf-vor |
