| article html file updated | 7 February 2020 23:28 CET | Update | https://www.mdpi.com/2071-1050/9/2/281 |
| article html file updated | 23 September 2019 08:19 CEST | Update | - |
| article html file updated | 4 May 2019 11:07 CEST | Update | - |
| article html file updated | 1 March 2017 10:40 CET | Update | - |
| article html file updated | 16 February 2017 11:23 CET | Original file | - |
| article xml uploaded. | 16 February 2017 11:22 CET | Update | https://www.mdpi.com/2071-1050/9/2/281/xml |
| article xml uploaded. | 16 February 2017 11:22 CET | Original file | - |
| article pdf uploaded. | 16 February 2017 11:20 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/281/pdf |
| article pdf uploaded. | 15 February 2017 11:14 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/281/pdf-vor |
