| article html file updated | 8 February 2020 03:09 CET | Update | https://www.mdpi.com/1999-4907/8/4/114 |
| article html file updated | 24 September 2019 05:25 CEST | Update | - |
| article html file updated | 4 May 2019 03:02 CEST | Update | - |
| article html file updated | 28 April 2017 06:41 CEST | Update | - |
| article html file updated | 8 April 2017 13:45 CEST | Original file | - |
| article xml uploaded. | 8 April 2017 13:44 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/114/xml |
| article pdf uploaded. | 8 April 2017 13:44 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/4/114/pdf |
