| article html file updated | 9 February 2020 11:42 CET | Update | https://www.mdpi.com/2227-9067/5/4/46 |
| article html file updated | 2 October 2019 01:57 CEST | Update | - |
| article html file updated | 1 May 2019 07:46 CEST | Update | - |
| article html file updated | 17 April 2019 07:44 CEST | Update | - |
| article html file updated | 29 March 2019 10:50 CET | Update | - |
| article html file updated | 1 May 2018 05:23 CEST | Update | - |
| article html file updated | 29 March 2018 10:01 CEST | Original file | - |
| article xml uploaded. | 29 March 2018 09:18 CEST | Original file | https://www.mdpi.com/2227-9067/5/4/46/xml |
| article pdf uploaded. | 29 March 2018 09:18 CEST | Version of Record | https://www.mdpi.com/2227-9067/5/4/46/pdf |
