| article html file updated | 7 February 2020 20:11 CET | Update | https://www.mdpi.com/2076-3425/7/1/2 |
| article html file updated | 22 September 2019 14:34 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:02 CEST | Update | N/A |
| article html file updated | 8 February 2017 12:24 CET | Update | N/A |
| article html file updated | 23 December 2016 15:25 CET | Original file | N/A |
| article xml uploaded. | 23 December 2016 15:24 CET | Original file | https://www.mdpi.com/2076-3425/7/1/2/xml |
| article pdf uploaded. | 23 December 2016 15:24 CET | Version of Record | https://www.mdpi.com/2076-3425/7/1/2/pdf |
