| article html file updated | 8 February 2020 03:45 CET | Update | https://www.mdpi.com/2071-1050/9/4/630 |
| article html file updated | 24 September 2019 08:45 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:54 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:07 CEST | Update | N/A |
| article html file updated | 18 April 2017 11:53 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 11:51 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/630/xml |
| article pdf uploaded. | 18 April 2017 11:51 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/630/pdf |
| article pdf uploaded. | 17 April 2017 14:07 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/630/pdf-vor |
