| article html file updated | 8 February 2020 07:55 CET | Update | https://www.mdpi.com/2071-1050/9/6/997 |
| article html file updated | 25 September 2019 06:31 CEST | Update | - |
| article html file updated | 3 May 2019 18:08 CEST | Update | - |
| article html file updated | 28 June 2017 14:45 CEST | Update | - |
| article html file updated | 23 June 2017 03:50 CEST | Update | - |
| article xml uploaded. | 23 June 2017 03:49 CEST | Update | https://www.mdpi.com/2071-1050/9/6/997/xml |
| article pdf uploaded. | 23 June 2017 03:49 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/6/997/pdf |
| article html file updated | 9 June 2017 13:52 CEST | Original file | - |
| article pdf uploaded. | 9 June 2017 13:51 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/6/997/pdf-vor |
