| article html file updated | 9 February 2020 04:45 CET | Update | https://www.mdpi.com/2079-6412/8/2/52 |
| article html file updated | 30 September 2019 07:55 CEST | Update | - |
| article html file updated | 1 May 2019 22:42 CEST | Update | - |
| article html file updated | 17 April 2019 21:22 CEST | Update | - |
| article html file updated | 28 March 2019 19:15 CET | Update | - |
| article html file updated | 14 March 2018 08:48 CET | Update | - |
| article html file updated | 29 January 2018 16:13 CET | Original file | - |
| article xml uploaded. | 29 January 2018 16:11 CET | Update | https://www.mdpi.com/2079-6412/8/2/52/xml |
| article xml uploaded. | 29 January 2018 16:11 CET | Original file | - |
| article pdf uploaded. | 29 January 2018 16:11 CET | Version of Record | https://www.mdpi.com/2079-6412/8/2/52/pdf |
