| article html file updated | 11 February 2020 04:27 CET | Update | https://www.mdpi.com/2075-4701/9/1/6 |
| article html file updated | 12 October 2019 06:48 CEST | Update | N/A |
| article html file updated | 27 April 2019 16:31 CEST | Update | N/A |
| article html file updated | 13 April 2019 12:22 CEST | Update | N/A |
| article html file updated | 2 April 2019 16:37 CEST | Update | N/A |
| article html file updated | 1 March 2019 20:13 CET | Update | N/A |
| article html file updated | 30 January 2019 02:58 CET | Update | N/A |
| article html file updated | 20 December 2018 17:30 CET | Original file | N/A |
| article xml uploaded. | 20 December 2018 17:29 CET | Update | https://www.mdpi.com/2075-4701/9/1/6/xml |
| article xml uploaded. | 20 December 2018 17:29 CET | Original file | N/A |
| article pdf uploaded. | 20 December 2018 17:29 CET | Version of Record | https://www.mdpi.com/2075-4701/9/1/6/pdf |