| article html file updated | 7 February 2020 19:13 CET | Update | https://www.mdpi.com/2075-4450/7/4/73 |
| article html file updated | 22 September 2019 09:19 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:04 CEST | Update | N/A |
| article html file updated | 29 December 2016 04:34 CET | Update | N/A |
| article html file updated | 7 December 2016 16:30 CET | Original file | N/A |
| article xml uploaded. | 7 December 2016 16:29 CET | Original file | https://www.mdpi.com/2075-4450/7/4/73/xml |
| article pdf uploaded. | 7 December 2016 16:29 CET | Version of Record | https://www.mdpi.com/2075-4450/7/4/73/pdf |
