| article html file updated | 7 February 2020 23:47 CET | Update | https://www.mdpi.com/2071-1050/9/2/312 |
| article html file updated | 23 September 2019 10:08 CEST | Update | N/A |
| article html file updated | 4 May 2019 10:29 CEST | Update | N/A |
| article html file updated | 1 March 2017 10:44 CET | Update | N/A |
| article html file updated | 22 February 2017 10:09 CET | Original file | N/A |
| article xml uploaded. | 22 February 2017 10:08 CET | Original file | https://www.mdpi.com/2071-1050/9/2/312/xml |
| article pdf uploaded. | 22 February 2017 10:08 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/312/pdf |
| article pdf uploaded. | 20 February 2017 10:02 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/312/pdf-vor |
