| article html file updated | 7 February 2020 20:01 CET | Update | https://www.mdpi.com/2073-8994/8/12/159 |
| article html file updated | 22 September 2019 13:40 CEST | Update | - |
| article html file updated | 4 May 2019 18:24 CEST | Update | - |
| article html file updated | 27 December 2016 11:40 CET | Update | - |
| article html file updated | 21 December 2016 06:05 CET | Original file | - |
| article xml uploaded. | 21 December 2016 06:04 CET | Update | https://www.mdpi.com/2073-8994/8/12/159/xml |
| article xml uploaded. | 21 December 2016 06:04 CET | Update | - |
| article xml uploaded. | 21 December 2016 06:04 CET | Original file | - |
| article pdf uploaded. | 21 December 2016 06:04 CET | Version of Record | https://www.mdpi.com/2073-8994/8/12/159/pdf |
