| article html file updated | 8 February 2020 02:27 CET | Update | https://www.mdpi.com/2071-1050/9/4/514 |
| article html file updated | 24 September 2019 01:23 CEST | Update | - |
| article html file updated | 4 May 2019 04:35 CEST | Update | - |
| article html file updated | 28 April 2017 10:47 CEST | Update | - |
| article html file updated | 29 March 2017 09:34 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 09:32 CEST | Update | https://www.mdpi.com/2071-1050/9/4/514/xml |
| article pdf uploaded. | 29 March 2017 09:32 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/514/pdf |
