| article html file updated | 7 February 2020 18:58 CET | Update | https://www.mdpi.com/2073-4352/6/12/159 |
| article html file updated | 22 September 2019 08:21 CEST | Update | - |
| article html file updated | 4 May 2019 20:35 CEST | Update | - |
| article html file updated | 27 December 2016 11:22 CET | Update | - |
| article html file updated | 2 December 2016 09:22 CET | Original file | - |
| article xml uploaded. | 2 December 2016 09:21 CET | Original file | https://www.mdpi.com/2073-4352/6/12/159/xml |
| article pdf uploaded. | 2 December 2016 09:21 CET | Version of Record | https://www.mdpi.com/2073-4352/6/12/159/pdf |
