| article html file updated | 7 February 2020 23:58 CET | Update | https://www.mdpi.com/2072-6643/9/2/176 |
| article html file updated | 23 September 2019 11:08 CEST | Update | - |
| article html file updated | 4 May 2019 10:05 CEST | Update | - |
| article html file updated | 2 March 2017 04:01 CET | Update | - |
| article html file updated | 22 February 2017 09:27 CET | Original file | - |
| article xml uploaded. | 22 February 2017 09:26 CET | Original file | https://www.mdpi.com/2072-6643/9/2/176/xml |
| article pdf uploaded. | 22 February 2017 09:26 CET | Version of Record | https://www.mdpi.com/2072-6643/9/2/176/pdf |
