| article html file updated | 8 February 2020 02:05 CET | Update | https://www.mdpi.com/2071-1050/9/4/481 |
| article html file updated | 23 September 2019 23:29 CEST | Update | - |
| article html file updated | 4 May 2019 05:21 CEST | Update | - |
| article html file updated | 28 April 2017 10:41 CEST | Update | - |
| article html file updated | 27 March 2017 05:28 CEST | Update | - |
| article html file updated | 26 March 2017 22:23 CEST | Update | - |
| article html file updated | 25 March 2017 22:23 CET | Update | - |
| article html file updated | 24 March 2017 22:25 CET | Update | - |
| article html file updated | 24 March 2017 11:27 CET | Original file | - |
| article xml uploaded. | 24 March 2017 11:25 CET | Original file | https://www.mdpi.com/2071-1050/9/4/481/xml |
| article pdf uploaded. | 24 March 2017 11:25 CET | Updated version of record | https://www.mdpi.com/2071-1050/9/4/481/pdf |
| article pdf uploaded. | 23 March 2017 12:25 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/481/pdf-vor |
