| article html file updated | 7 February 2020 20:24 CET | Update | https://www.mdpi.com/2072-6643/9/1/12 |
| article html file updated | 22 September 2019 15:45 CEST | Update | - |
| article html file updated | 4 May 2019 17:37 CEST | Update | - |
| article html file updated | 7 February 2017 12:17 CET | Update | - |
| article html file updated | 28 December 2016 04:27 CET | Original file | - |
| article xml uploaded. | 28 December 2016 04:26 CET | Original file | https://www.mdpi.com/2072-6643/9/1/12/xml |
| article pdf uploaded. | 28 December 2016 04:26 CET | Version of Record | https://www.mdpi.com/2072-6643/9/1/12/pdf |
