| article html file updated | 8 February 2020 18:22 CET | Update | https://www.mdpi.com/2076-0817/6/4/49 |
| article html file updated | 27 September 2019 17:50 CEST | Update | N/A |
| article html file updated | 2 May 2019 21:29 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:16 CET | Update | N/A |
| article html file updated | 13 October 2017 12:24 CEST | Original file | N/A |
| article xml uploaded. | 13 October 2017 12:22 CEST | Update | https://www.mdpi.com/2076-0817/6/4/49/xml |
| article xml uploaded. | 13 October 2017 12:22 CEST | Original file | N/A |
| article pdf uploaded. | 13 October 2017 12:22 CEST | Version of Record | https://www.mdpi.com/2076-0817/6/4/49/pdf |
