| article html file updated | 9 February 2020 03:09 CET | Update | https://www.mdpi.com/1996-1073/11/1/206 |
| article html file updated | 29 September 2019 22:39 CEST | Update | - |
| article html file updated | 2 May 2019 02:03 CEST | Update | - |
| article html file updated | 18 April 2019 00:19 CEST | Update | - |
| article html file updated | 28 March 2019 15:47 CET | Update | - |
| article html file updated | 1 February 2018 14:12 CET | Update | - |
| article html file updated | 15 January 2018 15:45 CET | Original file | - |
| article xml uploaded. | 15 January 2018 15:43 CET | Update | https://www.mdpi.com/1996-1073/11/1/206/xml |
| article xml uploaded. | 15 January 2018 15:43 CET | Original file | - |
| article pdf uploaded. | 15 January 2018 15:43 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/206/pdf |
