| article html file updated | 8 February 2020 00:21 CET | Update | https://www.mdpi.com/2076-3387/7/1/6 |
| article html file updated | 23 September 2019 13:21 CEST | Update | N/A |
| article html file updated | 4 May 2019 09:15 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:18 CEST | Update | N/A |
| article html file updated | 27 February 2017 09:43 CET | Original file | N/A |
| article xml uploaded. | 27 February 2017 09:42 CET | Original file | https://www.mdpi.com/2076-3387/7/1/6/xml |
| article pdf uploaded. | 27 February 2017 09:42 CET | Version of Record | https://www.mdpi.com/2076-3387/7/1/6/pdf |
