| article html file updated | 8 February 2020 00:55 CET | Update | https://www.mdpi.com/2079-6382/6/1/9 |
| article html file updated | 23 September 2019 16:45 CEST | Update | N/A |
| article html file updated | 4 May 2019 07:53 CEST | Update | N/A |
| article html file updated | 29 March 2017 07:47 CEST | Update | N/A |
| article html file updated | 7 March 2017 12:07 CET | Original file | N/A |
| article xml uploaded. | 7 March 2017 12:06 CET | Original file | https://www.mdpi.com/2079-6382/6/1/9/xml |
| article pdf uploaded. | 7 March 2017 12:06 CET | Version of Record | https://www.mdpi.com/2079-6382/6/1/9/pdf |
