| article html file updated | 7 February 2020 09:48 CET | Update | https://www.mdpi.com/2071-1050/8/6/537 |
| article html file updated | 5 May 2019 13:38 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:48 CET | Update | N/A |
| article html file updated | 29 June 2016 05:28 CEST | Update | N/A |
| article html file updated | 6 June 2016 14:52 CEST | Original file | N/A |
| article xml uploaded. | 6 June 2016 14:51 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/537/xml |
| article pdf uploaded. | 6 June 2016 14:51 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/537/pdf |
