| article html file updated | 8 February 2020 02:27 CET | Update | https://new.mdpi.com/2071-1050/9/4/515 |
| article html file updated | 24 September 2019 01:25 CEST | Update | - |
| article html file updated | 4 May 2019 04:34 CEST | Update | - |
| article html file updated | 28 April 2017 10:47 CEST | Update | - |
| article html file updated | 29 March 2017 10:10 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 10:09 CEST | Update | https://new.mdpi.com/2071-1050/9/4/515/xml |
| article pdf uploaded. | 29 March 2017 10:09 CEST | Version of Record | https://new.mdpi.com/2071-1050/9/4/515/pdf |
