| article html file updated | 7 February 2020 15:19 CET | Update | https://www.mdpi.com/2076-0760/5/3/50 |
| article html file updated | 5 May 2019 03:30 CEST | Update | - |
| article html file updated | 21 September 2016 11:54 CEST | Original file | - |
| article xml uploaded. | 21 September 2016 11:52 CEST | Original file | https://www.mdpi.com/2076-0760/5/3/50/xml |
| article pdf uploaded. | 21 September 2016 11:52 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/3/50/pdf |
