| article html file updated | 8 February 2020 02:28 CET | Update | https://www.mdpi.com/2071-1050/9/4/517 |
| article html file updated | 24 September 2019 01:27 CEST | Update | - |
| article html file updated | 4 May 2019 04:34 CEST | Update | - |
| article html file updated | 28 April 2017 10:48 CEST | Update | - |
| article html file updated | 29 March 2017 10:36 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 10:28 CEST | Update | https://www.mdpi.com/2071-1050/9/4/517/xml |
| article pdf uploaded. | 29 March 2017 10:28 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/517/pdf |
