| article html file updated | 9 February 2020 07:07 CET | Update | https://www.mdpi.com/1996-1073/11/2/451 |
| article html file updated | 30 September 2019 22:06 CEST | Update | - |
| article html file updated | 1 May 2019 17:25 CEST | Update | - |
| article html file updated | 17 April 2019 16:47 CEST | Update | - |
| article html file updated | 29 March 2019 00:20 CET | Update | - |
| article html file updated | 14 March 2018 16:27 CET | Update | - |
| article html file updated | 23 February 2018 12:45 CET | Original file | - |
| article xml uploaded. | 23 February 2018 12:44 CET | Original file | https://www.mdpi.com/1996-1073/11/2/451/xml |
| article pdf uploaded. | 23 February 2018 12:44 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/2/451/pdf |
| article pdf uploaded. | 20 February 2018 13:41 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/451/pdf-vor |
