| article html file updated | 7 February 2020 23:02 CET | Update | https://www.mdpi.com/2071-1050/9/2/242 |
| article html file updated | 23 September 2019 06:00 CEST | Update | - |
| article html file updated | 4 May 2019 11:58 CEST | Update | - |
| article html file updated | 1 March 2017 10:34 CET | Update | - |
| article html file updated | 15 February 2017 02:23 CET | Original file | - |
| article xml uploaded. | 15 February 2017 02:22 CET | Original file | https://www.mdpi.com/2071-1050/9/2/242/xml |
| article pdf uploaded. | 15 February 2017 02:22 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/2/242/pdf |
| article pdf uploaded. | 10 February 2017 05:28 CET | Version of Record | https://www.mdpi.com/2071-1050/9/2/242/pdf-vor |
