| article html file updated | 7 February 2020 15:35 CET | Update | https://www.mdpi.com/2076-0787/5/4/80 |
| article html file updated | 5 May 2019 03:01 CEST | Update | - |
| article html file updated | 27 September 2016 04:31 CEST | Original file | - |
| article xml uploaded. | 27 September 2016 04:29 CEST | Original file | https://www.mdpi.com/2076-0787/5/4/80/xml |
| article pdf uploaded. | 27 September 2016 04:29 CEST | Version of Record | https://www.mdpi.com/2076-0787/5/4/80/pdf |
