| article html file updated | 8 February 2020 11:30 CET | Update | https://www.mdpi.com/2076-0787/6/3/50 |
| article html file updated | 3 May 2019 11:24 CEST | Update | - |
| article html file updated | 27 March 2019 16:44 CET | Update | - |
| article pdf uploaded. | 26 July 2017 08:29 CEST | Updated version of record | https://www.mdpi.com/2076-0787/6/3/50/pdf |
| article html file updated | 20 July 2017 11:38 CEST | Update | - |
| article html file updated | 20 July 2017 11:37 CEST | Update | - |
| article html file updated | 20 July 2017 11:36 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:33 CEST | Original file | https://www.mdpi.com/2076-0787/6/3/50/xml |
| article pdf uploaded. | 20 July 2017 11:33 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/3/50/pdf-vor |
