| article html file updated | 8 February 2020 02:14 CET | Update | https://www.mdpi.com/2072-6643/9/4/325 |
| article html file updated | 24 September 2019 00:10 CEST | Update | - |
| article html file updated | 4 May 2019 05:04 CEST | Update | - |
| article html file updated | 28 April 2017 11:44 CEST | Update | - |
| article html file updated | 27 March 2017 05:48 CEST | Update | - |
| article html file updated | 27 March 2017 05:32 CEST | Update | - |
| article html file updated | 26 March 2017 22:32 CEST | Update | - |
| article html file updated | 25 March 2017 22:32 CET | Update | - |
| article html file updated | 25 March 2017 08:03 CET | Original file | - |
| article xml uploaded. | 25 March 2017 08:02 CET | Original file | https://www.mdpi.com/2072-6643/9/4/325/xml |
| article pdf uploaded. | 25 March 2017 08:02 CET | Version of Record | https://www.mdpi.com/2072-6643/9/4/325/pdf |