| article html file updated | 7 February 2020 10:09 CET | Update | https://www.mdpi.com/2071-1050/8/6/555 |
| article html file updated | 5 May 2019 12:59 CEST | Update | - |
| article html file updated | 27 March 2019 07:27 CET | Update | - |
| article html file updated | 29 June 2016 05:33 CEST | Update | - |
| article html file updated | 14 June 2016 15:34 CEST | Original file | - |
| article xml uploaded. | 14 June 2016 15:33 CEST | Update | https://www.mdpi.com/2071-1050/8/6/555/xml |
| article pdf uploaded. | 14 June 2016 15:33 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/555/pdf |
