| article html file updated | 7 February 2020 20:29 CET | Update | https://www.mdpi.com/2075-4701/7/1/8 |
| article html file updated | 22 September 2019 16:13 CEST | Update | N/A |
| article html file updated | 4 May 2019 17:26 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:29 CET | Update | N/A |
| article html file updated | 29 December 2016 11:29 CET | Original file | N/A |
| article xml uploaded. | 29 December 2016 11:28 CET | Update | https://www.mdpi.com/2075-4701/7/1/8/xml |
| article xml uploaded. | 29 December 2016 11:28 CET | Original file | N/A |
| article pdf uploaded. | 29 December 2016 11:28 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/8/pdf |
