| article html file updated | 8 February 2020 14:54 CET | Update | https://www.mdpi.com/1999-4923/9/3/31 |
| article html file updated | 26 September 2019 20:34 CEST | Update | - |
| article html file updated | 3 May 2019 04:21 CEST | Update | - |
| article html file updated | 30 September 2017 14:24 CEST | Update | - |
| article html file updated | 30 August 2017 15:13 CEST | Original file | - |
| article xml uploaded. | 30 August 2017 15:12 CEST | Update | https://www.mdpi.com/1999-4923/9/3/31/xml |
| article xml uploaded. | 30 August 2017 15:12 CEST | Original file | - |
| article pdf uploaded. | 30 August 2017 15:12 CEST | Version of Record | https://www.mdpi.com/1999-4923/9/3/31/pdf |
