| article html file updated | 8 February 2020 16:50 CET | Update | https://www.mdpi.com/1999-4923/9/4/37 |
| article html file updated | 27 September 2019 07:08 CEST | Update | - |
| article html file updated | 3 May 2019 00:44 CEST | Update | - |
| article html file updated | 2 January 2018 20:39 CET | Update | - |
| article html file updated | 25 September 2017 12:14 CEST | Original file | - |
| article xml uploaded. | 25 September 2017 12:13 CEST | Original file | https://www.mdpi.com/1999-4923/9/4/37/xml |
| article pdf uploaded. | 25 September 2017 12:13 CEST | Updated version of record | https://www.mdpi.com/1999-4923/9/4/37/pdf |
| article pdf uploaded. | 21 September 2017 15:40 CEST | Version of Record | https://www.mdpi.com/1999-4923/9/4/37/pdf-vor |
