| article html file updated | 9 February 2020 02:43 CET | Update | https://www.mdpi.com/2079-6412/8/1/31 |
| article html file updated | 29 September 2019 20:06 CEST | Update | - |
| article html file updated | 2 May 2019 02:57 CEST | Update | - |
| article html file updated | 18 April 2019 01:08 CEST | Update | - |
| article html file updated | 28 March 2019 14:45 CET | Update | - |
| article html file updated | 1 February 2018 10:32 CET | Update | - |
| article html file updated | 11 January 2018 16:25 CET | Original file | - |
| article xml uploaded. | 11 January 2018 16:24 CET | Update | https://www.mdpi.com/2079-6412/8/1/31/xml |
| article xml uploaded. | 11 January 2018 16:24 CET | Original file | - |
| article pdf uploaded. | 11 January 2018 16:24 CET | Version of Record | https://www.mdpi.com/2079-6412/8/1/31/pdf |
