| article html file updated | 8 February 2020 19:18 CET | Update | https://www.mdpi.com/2076-0817/6/4/53 |
| article html file updated | 27 September 2019 23:23 CEST | Update | N/A |
| article html file updated | 2 May 2019 19:20 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:17 CET | Update | N/A |
| article html file updated | 24 October 2017 13:13 CEST | Original file | N/A |
| article xml uploaded. | 24 October 2017 13:12 CEST | Original file | https://www.mdpi.com/2076-0817/6/4/53/xml |
| article pdf uploaded. | 24 October 2017 13:12 CEST | Version of Record | https://www.mdpi.com/2076-0817/6/4/53/pdf |
