| article html file updated | 8 February 2020 07:23 CET | Update | https://www.mdpi.com/1999-4907/8/6/193 |
| article html file updated | 25 September 2019 03:45 CEST | Update | - |
| article html file updated | 3 May 2019 19:08 CEST | Update | - |
| article html file updated | 27 June 2017 11:17 CEST | Update | - |
| article html file updated | 6 June 2017 12:03 CEST | Update | - |
| article xml uploaded. | 6 June 2017 12:01 CEST | Update | https://www.mdpi.com/1999-4907/8/6/193/xml |
| article pdf uploaded. | 6 June 2017 12:01 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/6/193/pdf |
| article html file updated | 3 June 2017 10:26 CEST | Original file | - |
| article pdf uploaded. | 3 June 2017 10:25 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/6/193/pdf-vor |
