| article html file updated | 7 February 2020 16:18 CET | Update | https://www.mdpi.com/2076-0760/5/4/63 |
| article html file updated | 5 May 2019 01:45 CEST | Update | - |
| article html file updated | 13 October 2016 13:05 CEST | Original file | - |
| article xml uploaded. | 13 October 2016 13:04 CEST | Original file | https://www.mdpi.com/2076-0760/5/4/63/xml |
| article pdf uploaded. | 13 October 2016 13:04 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/4/63/pdf |
