| article html file updated | 9 February 2020 04:49 CET | Update | https://www.mdpi.com/2079-6374/8/1/12 |
| article html file updated | 30 September 2019 08:20 CEST | Update | - |
| article html file updated | 1 May 2019 22:32 CEST | Update | - |
| article html file updated | 17 April 2019 21:13 CEST | Update | - |
| article html file updated | 28 March 2019 19:24 CET | Update | - |
| article html file updated | 27 March 2018 14:27 CEST | Update | - |
| article html file updated | 30 January 2018 09:05 CET | Original file | - |
| article xml uploaded. | 30 January 2018 09:03 CET | Original file | https://www.mdpi.com/2079-6374/8/1/12/xml |
| article pdf uploaded. | 30 January 2018 09:03 CET | Version of Record | https://www.mdpi.com/2079-6374/8/1/12/pdf |
