| article html file updated | 8 February 2020 06:56 CET | Update | https://www.mdpi.com/2071-1050/9/6/907 |
| article html file updated | 25 September 2019 01:35 CEST | Update | - |
| article html file updated | 3 May 2019 19:58 CEST | Update | - |
| article html file updated | 28 June 2017 14:33 CEST | Update | - |
| article html file updated | 28 May 2017 12:00 CEST | Original file | - |
| article xml uploaded. | 28 May 2017 11:59 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/907/xml |
| article pdf uploaded. | 28 May 2017 11:59 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/907/pdf |
