| article html file updated | 8 February 2020 07:53 CET | Update | https://www.mdpi.com/2071-1050/9/6/988 |
| article html file updated | 25 September 2019 06:23 CEST | Update | - |
| article html file updated | 3 May 2019 18:11 CEST | Update | - |
| article html file updated | 28 June 2017 14:44 CEST | Update | - |
| article html file updated | 9 June 2017 14:53 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 14:52 CEST | Original file | https://www.mdpi.com/2071-1050/9/6/988/xml |
| article pdf uploaded. | 9 June 2017 14:52 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/988/pdf |
