| article html file updated | 8 February 2020 15:06 CET | Update | https://www.mdpi.com/2073-4344/7/9/259 |
| article html file updated | 26 September 2019 21:37 CEST | Update | - |
| article html file updated | 3 May 2019 03:58 CEST | Update | - |
| article html file updated | 26 September 2017 06:20 CEST | Update | - |
| article html file updated | 1 September 2017 16:09 CEST | Original file | - |
| article xml uploaded. | 1 September 2017 16:08 CEST | Original file | https://www.mdpi.com/2073-4344/7/9/259/xml |
| article pdf uploaded. | 1 September 2017 16:08 CEST | Version of Record | https://www.mdpi.com/2073-4344/7/9/259/pdf |
