| article html file updated | 8 February 2020 19:14 CET | Update | https://www.mdpi.com/2227-7102/7/4/80 |
| article html file updated | 27 September 2019 22:58 CEST | Update | N/A |
| article html file updated | 2 May 2019 19:30 CEST | Update | N/A |
| article html file updated | 2 January 2018 11:22 CET | Update | N/A |
| article html file updated | 23 October 2017 13:37 CEST | Original file | N/A |
| article xml uploaded. | 23 October 2017 13:35 CEST | Original file | https://www.mdpi.com/2227-7102/7/4/80/xml |
| article pdf uploaded. | 23 October 2017 13:35 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/4/80/pdf |
