| article html file updated | 8 February 2020 03:49 CET | Update | https://www.mdpi.com/2071-1050/9/4/641 |
| article html file updated | 24 September 2019 09:09 CEST | Update | - |
| article html file updated | 4 May 2019 01:46 CEST | Update | - |
| article html file updated | 28 April 2017 11:09 CEST | Update | - |
| article html file updated | 20 April 2017 12:54 CEST | Original file | - |
| article xml uploaded. | 20 April 2017 12:53 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/641/xml |
| article pdf uploaded. | 20 April 2017 12:53 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/641/pdf |
| article pdf uploaded. | 18 April 2017 14:23 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/641/pdf-vor |
