| article html file updated | 8 February 2020 14:23 CET | Update | https://www.mdpi.com/1999-4907/8/9/308 |
| article html file updated | 26 September 2019 17:36 CEST | Update | - |
| article html file updated | 3 May 2019 05:20 CEST | Update | - |
| article html file updated | 30 September 2017 10:20 CEST | Update | - |
| article html file updated | 24 August 2017 15:20 CEST | Original file | - |
| article xml uploaded. | 24 August 2017 15:18 CEST | Update | https://www.mdpi.com/1999-4907/8/9/308/xml |
| article xml uploaded. | 24 August 2017 15:18 CEST | Original file | - |
| article pdf uploaded. | 24 August 2017 15:18 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/308/pdf |
