| article html file updated | 8 February 2020 02:43 CET | Update | https://www.mdpi.com/2227-7102/7/2/45 |
| article html file updated | 24 September 2019 02:55 CEST | Update | N/A |
| article html file updated | 4 May 2019 04:00 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:57 CEST | Update | N/A |
| article html file updated | 1 April 2017 04:01 CEST | Original file | N/A |
| article xml uploaded. | 1 April 2017 04:00 CEST | Update | https://www.mdpi.com/2227-7102/7/2/45/xml |
| article pdf uploaded. | 1 April 2017 04:00 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/45/pdf |
