| article html file updated | 8 February 2020 23:53 CET | Update | https://www.mdpi.com/2227-7102/7/4/89 |
| article html file updated | 29 September 2019 04:00 CEST | Update | - |
| article html file updated | 2 May 2019 08:59 CEST | Update | - |
| article html file updated | 18 April 2019 06:44 CEST | Update | - |
| article html file updated | 2 January 2018 11:22 CET | Update | - |
| article html file updated | 12 December 2017 14:20 CET | Original file | - |
| article xml uploaded. | 12 December 2017 14:19 CET | Update | https://www.mdpi.com/2227-7102/7/4/89/xml |
| article xml uploaded. | 12 December 2017 14:19 CET | Original file | - |
| article pdf uploaded. | 12 December 2017 14:19 CET | Version of Record | https://www.mdpi.com/2227-7102/7/4/89/pdf |
