| article html file updated | 8 February 2020 19:23 CET | Update | https://www.mdpi.com/2076-0825/6/4/30 |
| article html file updated | 27 September 2019 23:55 CEST | Update | - |
| article html file updated | 2 May 2019 19:07 CEST | Update | - |
| article html file updated | 2 January 2018 16:30 CET | Update | - |
| article html file updated | 25 October 2017 15:07 CEST | Original file | - |
| article xml uploaded. | 25 October 2017 15:06 CEST | Update | https://www.mdpi.com/2076-0825/6/4/30/xml |
| article xml uploaded. | 25 October 2017 15:06 CEST | Original file | - |
| article pdf uploaded. | 25 October 2017 15:06 CEST | Version of Record | https://www.mdpi.com/2076-0825/6/4/30/pdf |
