| article html file updated | 8 February 2020 18:02 CET | Update | https://www.mdpi.com/2075-4701/7/10/421 |
| article html file updated | 27 September 2019 15:19 CEST | Update | - |
| article html file updated | 2 May 2019 22:12 CEST | Update | - |
| article html file updated | 3 November 2017 04:21 CET | Update | - |
| article html file updated | 10 October 2017 12:33 CEST | Original file | - |
| article xml uploaded. | 10 October 2017 12:31 CEST | Update | https://www.mdpi.com/2075-4701/7/10/421/xml |
| article xml uploaded. | 10 October 2017 12:31 CEST | Original file | - |
| article pdf uploaded. | 10 October 2017 12:31 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/10/421/pdf |
