| article html file updated | 7 February 2020 22:22 CET | Update | https://www.mdpi.com/2071-1050/9/2/189 |
| article html file updated | 23 September 2019 02:15 CEST | Update | - |
| article html file updated | 4 May 2019 13:19 CEST | Update | - |
| article html file updated | 1 March 2017 10:26 CET | Update | - |
| article html file updated | 6 February 2017 12:28 CET | Original file | - |
| article xml uploaded. | 6 February 2017 12:27 CET | Original file | https://www.mdpi.com/2071-1050/9/2/189/xml |
| article pdf uploaded. | 6 February 2017 12:27 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/189/pdf |
| article pdf uploaded. | 27 January 2017 15:58 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/189/pdf-vor |
