| article html file updated | 8 February 2020 04:01 CET | Update | https://www.mdpi.com/2071-1050/9/4/656 |
| article html file updated | 24 September 2019 10:16 CEST | Update | - |
| article html file updated | 4 May 2019 01:24 CEST | Update | - |
| article html file updated | 28 April 2017 11:11 CEST | Update | - |
| article html file updated | 20 April 2017 13:59 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 13:58 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/656/xml |
| article pdf uploaded. | 20 April 2017 13:58 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/656/pdf |
