| article html file updated | 9 February 2020 03:57 CET | Update | https://www.mdpi.com/1996-1073/11/2/258 |
| article html file updated | 30 September 2019 03:17 CEST | Update | - |
| article html file updated | 2 May 2019 00:21 CEST | Update | - |
| article html file updated | 17 April 2019 22:49 CEST | Update | - |
| article html file updated | 28 March 2019 17:33 CET | Update | - |
| article html file updated | 14 March 2018 15:14 CET | Update | - |
| article html file updated | 23 January 2018 08:01 CET | Original file | - |
| article xml uploaded. | 23 January 2018 07:59 CET | Update | https://www.mdpi.com/1996-1073/11/2/258/xml |
| article xml uploaded. | 23 January 2018 07:59 CET | Update | - |
| article xml uploaded. | 23 January 2018 07:59 CET | Original file | - |
| article pdf uploaded. | 23 January 2018 07:59 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/258/pdf |
