| article html file updated | 8 February 2020 00:54 CET | Update | https://www.mdpi.com/2079-7737/6/1/19 |
| article html file updated | 23 September 2019 16:38 CEST | Update | - |
| article html file updated | 4 May 2019 07:56 CEST | Update | - |
| article html file updated | 30 March 2017 11:00 CEST | Update | - |
| article html file updated | 7 March 2017 07:42 CET | Original file | - |
| article xml uploaded. | 7 March 2017 07:41 CET | Original file | https://www.mdpi.com/2079-7737/6/1/19/xml |
| article pdf uploaded. | 7 March 2017 07:41 CET | Version of Record | https://www.mdpi.com/2079-7737/6/1/19/pdf |
