| article html file updated | 7 February 2020 19:20 CET | Update | https://www.mdpi.com/2076-3905/5/4/28 |
| article html file updated | 22 September 2019 09:59 CEST | Update | N/A |
| article html file updated | 4 May 2019 19:49 CEST | Update | N/A |
| article html file updated | 29 December 2016 11:50 CET | Update | N/A |
| article html file updated | 9 December 2016 10:25 CET | Original file | N/A |
| article xml uploaded. | 9 December 2016 10:24 CET | Original file | https://www.mdpi.com/2076-3905/5/4/28/xml |
| article pdf uploaded. | 9 December 2016 10:24 CET | Version of Record | https://www.mdpi.com/2076-3905/5/4/28/pdf |
